Smiljanić, M. M., Vorkapić, M., Cvetanović, K., Milinković, E., Lazić, Ž., Bošković, M. V.,& Svorcan, J.. (2023). Metoda za posmatranje i analizu protoka fluida u Si-Pyrex staklo opto-mikrofluidnim platformama. 
University of Belgrade - Institute of Chemistry, Technology and Metallurgy..
https://hdl.handle.net/21.15107/rcub_cer_6659

Smiljanić MM, Vorkapić M, Cvetanović K, Milinković E, Lazić Ž, Bošković MV, Svorcan J. Metoda za posmatranje i analizu protoka fluida u Si-Pyrex staklo opto-mikrofluidnim platformama. 2023;.
https://hdl.handle.net/21.15107/rcub_cer_6659 .

Smiljanić, Milče M., Vorkapić, Miloš, Cvetanović, Katarina, Milinković, Evgenija, Lazić, Žarko, Bošković, Marko V., Svorcan, Jelena, "Metoda za posmatranje i analizu protoka fluida u Si-Pyrex staklo opto-mikrofluidnim platformama" (2023),
https://hdl.handle.net/21.15107/rcub_cer_6659 .

TY  - CONF
AU  - Svorcan, Jelena
AU  - Smiljanić, Milče M.
AU  - Vorkapić, Miloš
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5642
AB  - Microfluidic devices are excessively used for various biomedical, chemical, and engineering 
applications. The most common microfluidic platforms are obtained from 
polydimethylsiloxane (PDMS). Platforms based on etched silicon wafers anodically bonded to 
Pyrex glass are more mechanically rigid, have better sealing and there is no gas permeability 
compared to those obtained from PDMS [1,2]. The aim of our work is to numerically analyze 
fluid flow in anisotropically etched silicon microchannels sealed with Pyrex glass. We present 
simulations of fluid flow in Y-bifurcated microchannels fabricated from the etched {100} 
silicon in 25 wt% tetramethylammonium hydroxide (TMAH) water solution at the temperature 
of 80°C [3]. We have explored two symmetrical Y-bifurcations that are defined with acute 
angles of 36.8° and 19° with the sides that are along the <310> and <610> crystallographic 
directions in the masking layer [3], respectively. The angles between obtained sidewalls and 
{100} silicon of two ingoing microchannels for the first and second Y-bifurcation are 72.5° 
and 80.7°, respectively. The sidewalls of outgoing microchannel in both cases are defined with 
<100> crystallographic directions and they are orthogonal to the surface of {100} silicon wafer. 
The appropriate widths of ingoing and outgoing microchannels are 300 and 400 μm, 
respectively. The depth of microchannels is 55 μm. All simulated flows are three-dimensional 
(3D), steady and laminar [4], while the investigated fluid is water. Velocities and pressure 
values are defined at the inlet and outlet boundaries, respectively. The resulting flows are 
illustrated by velocity contours. The obtained conclusions from fluid flow simulations of 
presented simple Y-bifurcations provide guidance for future fabrication of complex 
microfluidic platforms by a cost-effective process with good control over microchannel 
dimensions
PB  - Belgrade : University of Belgrade - Faculty of Mechanical Engineering
C3  - Booklet of Abstracts - 1st International Conference on Mathematical  Modelling in Mechanics and Engineering, 08.-10. September 2022., Belgrade, Serbia
T1  - Simulating flow in silicon Y-bifurcated microchannels
SP  - 46
EP  - 46
UR  - https://hdl.handle.net/21.15107/rcub_cer_5642
ER  - 

@conference{
author = "Svorcan, Jelena and Smiljanić, Milče M. and Vorkapić, Miloš",
year = "2022",
abstract = "Microfluidic devices are excessively used for various biomedical, chemical, and engineering 
applications. The most common microfluidic platforms are obtained from 
polydimethylsiloxane (PDMS). Platforms based on etched silicon wafers anodically bonded to 
Pyrex glass are more mechanically rigid, have better sealing and there is no gas permeability 
compared to those obtained from PDMS [1,2]. The aim of our work is to numerically analyze 
fluid flow in anisotropically etched silicon microchannels sealed with Pyrex glass. We present 
simulations of fluid flow in Y-bifurcated microchannels fabricated from the etched {100} 
silicon in 25 wt% tetramethylammonium hydroxide (TMAH) water solution at the temperature 
of 80°C [3]. We have explored two symmetrical Y-bifurcations that are defined with acute 
angles of 36.8° and 19° with the sides that are along the <310> and <610> crystallographic 
directions in the masking layer [3], respectively. The angles between obtained sidewalls and 
{100} silicon of two ingoing microchannels for the first and second Y-bifurcation are 72.5° 
and 80.7°, respectively. The sidewalls of outgoing microchannel in both cases are defined with 
<100> crystallographic directions and they are orthogonal to the surface of {100} silicon wafer. 
The appropriate widths of ingoing and outgoing microchannels are 300 and 400 μm, 
respectively. The depth of microchannels is 55 μm. All simulated flows are three-dimensional 
(3D), steady and laminar [4], while the investigated fluid is water. Velocities and pressure 
values are defined at the inlet and outlet boundaries, respectively. The resulting flows are 
illustrated by velocity contours. The obtained conclusions from fluid flow simulations of 
presented simple Y-bifurcations provide guidance for future fabrication of complex 
microfluidic platforms by a cost-effective process with good control over microchannel 
dimensions",
publisher = "Belgrade : University of Belgrade - Faculty of Mechanical Engineering",
journal = "Booklet of Abstracts - 1st International Conference on Mathematical  Modelling in Mechanics and Engineering, 08.-10. September 2022., Belgrade, Serbia",
title = "Simulating flow in silicon Y-bifurcated microchannels",
pages = "46-46",
url = "https://hdl.handle.net/21.15107/rcub_cer_5642"
}

Svorcan, J., Smiljanić, M. M.,& Vorkapić, M.. (2022). Simulating flow in silicon Y-bifurcated microchannels. in Booklet of Abstracts - 1st International Conference on Mathematical  Modelling in Mechanics and Engineering, 08.-10. September 2022., Belgrade, Serbia
Belgrade : University of Belgrade - Faculty of Mechanical Engineering., 46-46.
https://hdl.handle.net/21.15107/rcub_cer_5642

Svorcan J, Smiljanić MM, Vorkapić M. Simulating flow in silicon Y-bifurcated microchannels. in Booklet of Abstracts - 1st International Conference on Mathematical  Modelling in Mechanics and Engineering, 08.-10. September 2022., Belgrade, Serbia. 2022;:46-46.
https://hdl.handle.net/21.15107/rcub_cer_5642 .

Svorcan, Jelena, Smiljanić, Milče M., Vorkapić, Miloš, "Simulating flow in silicon Y-bifurcated microchannels" in Booklet of Abstracts - 1st International Conference on Mathematical  Modelling in Mechanics and Engineering, 08.-10. September 2022., Belgrade, Serbia (2022):46-46,
https://hdl.handle.net/21.15107/rcub_cer_5642 .

TY  - CONF
AU  - Tanović, Dragoljub
AU  - Svorcan, Jelena
AU  - Ivanović, Milica
AU  - Vorkapić, Miloš
AU  - Telebak, K
AU  - Stojanović, J
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5678
AB  - The wind speed is one of the major parameter influencing the design of the wind turbine, which varies widely over the different part of the country and globe. So, significant research is going on for the design of wind turbine for low, medium and high wind speed. Currently, many researchers have started designing small-scale horizontal axis wind turbines (HAWT) in world, to adapt their use to households. The advantage is reflected in the simple and affordable construction, uninterrupted operation and satisfactory power that wind turbines create. An airfoil is defined as the cross section of a body that is placed in an airstream in order to produce a useful aerodynamic force in the most efficient manner possible. The cross sections of wings, propeller blades, windmill blades, compressor and turbine blades in a jet engine, and hydrofoils are example of airfoils. A computational study has been conducted on various airfoils to simulate flows at different Reynolds numbers (Re) and wind speed to provide understanding and guidance for other low Reynolds-number designs. The numerical computational method used in this study is a boundary element method (BEM) which is implemented in software Qblade. It is an alternative deterministic method which incorporates a mesh that is only located on the boundaries of the domain and hence are attractive for free surface problems. The airfoils investigated in this study include NACA 4412, NACA 63-415 and S809. Performances such as power, power coefficient and tip speed ratio were compared.
PB  - Belgrade : Innovation Center of Faculty of Mechanical Engineering
C3  - Program and the Book of Abstracts - International Conference of Experimental and Numerical Investigations and New Technologies, CNN TECH 2022, 05 – 08 July 2022, Zlatibor, Serbia
T1  - The influence of the Reynolds number on the airfoils
SP  - 63
EP  - 63
UR  - https://hdl.handle.net/21.15107/rcub_cer_5678
ER  - 

@conference{
author = "Tanović, Dragoljub and Svorcan, Jelena and Ivanović, Milica and Vorkapić, Miloš and Telebak, K and Stojanović, J",
year = "2022",
abstract = "The wind speed is one of the major parameter influencing the design of the wind turbine, which varies widely over the different part of the country and globe. So, significant research is going on for the design of wind turbine for low, medium and high wind speed. Currently, many researchers have started designing small-scale horizontal axis wind turbines (HAWT) in world, to adapt their use to households. The advantage is reflected in the simple and affordable construction, uninterrupted operation and satisfactory power that wind turbines create. An airfoil is defined as the cross section of a body that is placed in an airstream in order to produce a useful aerodynamic force in the most efficient manner possible. The cross sections of wings, propeller blades, windmill blades, compressor and turbine blades in a jet engine, and hydrofoils are example of airfoils. A computational study has been conducted on various airfoils to simulate flows at different Reynolds numbers (Re) and wind speed to provide understanding and guidance for other low Reynolds-number designs. The numerical computational method used in this study is a boundary element method (BEM) which is implemented in software Qblade. It is an alternative deterministic method which incorporates a mesh that is only located on the boundaries of the domain and hence are attractive for free surface problems. The airfoils investigated in this study include NACA 4412, NACA 63-415 and S809. Performances such as power, power coefficient and tip speed ratio were compared.",
publisher = "Belgrade : Innovation Center of Faculty of Mechanical Engineering",
journal = "Program and the Book of Abstracts - International Conference of Experimental and Numerical Investigations and New Technologies, CNN TECH 2022, 05 – 08 July 2022, Zlatibor, Serbia",
title = "The influence of the Reynolds number on the airfoils",
pages = "63-63",
url = "https://hdl.handle.net/21.15107/rcub_cer_5678"
}

Tanović, D., Svorcan, J., Ivanović, M., Vorkapić, M., Telebak, K.,& Stojanović, J.. (2022). The influence of the Reynolds number on the airfoils. in Program and the Book of Abstracts - International Conference of Experimental and Numerical Investigations and New Technologies, CNN TECH 2022, 05 – 08 July 2022, Zlatibor, Serbia
Belgrade : Innovation Center of Faculty of Mechanical Engineering., 63-63.
https://hdl.handle.net/21.15107/rcub_cer_5678

Tanović D, Svorcan J, Ivanović M, Vorkapić M, Telebak K, Stojanović J. The influence of the Reynolds number on the airfoils. in Program and the Book of Abstracts - International Conference of Experimental and Numerical Investigations and New Technologies, CNN TECH 2022, 05 – 08 July 2022, Zlatibor, Serbia. 2022;:63-63.
https://hdl.handle.net/21.15107/rcub_cer_5678 .

Tanović, Dragoljub, Svorcan, Jelena, Ivanović, Milica, Vorkapić, Miloš, Telebak, K, Stojanović, J, "The influence of the Reynolds number on the airfoils" in Program and the Book of Abstracts - International Conference of Experimental and Numerical Investigations and New Technologies, CNN TECH 2022, 05 – 08 July 2022, Zlatibor, Serbia (2022):63-63,
https://hdl.handle.net/21.15107/rcub_cer_5678 .

TY  - CONF
AU  - Ilić, Stefan
AU  - Vorkapić, Miloš
AU  - Ivanov, Toni
AU  - Svorcan, Jelena
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5661
AB  - The application of additive technology gives a designer more freedom in designing and defining the optimal product design. Also, it is possible to make a model with different materials that have different mechanical properties in order to meet different requirements in different places inside and outside of the part. In this paper, a 3D printer Wanhao Duplicator, type i3 plus, made in the People's Republic of China, was used for the realization of the elements of a mechanical mounting system. It is a desktop 3D printer with a maximum printable area of 200 x 200 x 180 mm3, nozzle diameter of 0.1-0.4 mm, and printing speed of 10-100 mm/s (see Figure 3). For the realization of the model, the chosen material was ABS (Acrylonitrile Butadiene Styrene) in the form of a filament (diameter 1.75 mm, manufacturer Wanhao). ABS is an amorphous polymer with the following features: excellent mechanical properties, resistance to elevated temperatures, and resistance to shocks. On the Wanhao printer, the prescribed distance between the nozzle and the plate is 0.1 mm. This is the minimum thickness of a single printed layer in the xy plane. The diameter of the melted thread is 0.1 mm, which is very thin, allowing for a very dense construction of the print along the z axis. All these parameters are essential for the quality of the print. 3D printing technology enabled the custom design and fabrication of a mechanical system intended to be placed in an irradiation room, in order to hold the component whose electric characteristics are being examined. The irradiation room may contain one or more sources of ionizing radiation. Each irradiation room may have a different way of mounting the component under test. Since it is necessary to study a specific electronic component with different ionizing radiation sources (gamma and X-ray), at different dose rates, and located in different irradiation rooms, designing a custom mounting system for each irradiation room is necessary. The cost of making a mechanical mounting system using 3D printing technology is significantly lower compared to other production methods. Thus, the creation of a system for each irradiation room individually becomes more economical. Creating such a system for each irradiation room allows much easier and more accurate positioning of the component, which reduces the error in calculating the dose that the component receives during irradiation. Each mechanical system should allow the installation of printed circuit boards of different sizes, on which the tested electronic components are located. Also, the material from which the mounting system is made must not affect the component during the experiment. Materials used in 3D printing have a negligible effect on the reflection or scattering of high-energy photons because they do not contain atoms with heavy nuclei.
PB  - SIRAMM project  - H2020-WIDESPREAD-2018-03 Project No. 857124, Horizon 2020
C3  - Program and the Book of Abstracts - International Conference East Europe Conference on Additively Manufactured Materials – EECAM21, 2nd-4th September 2021, Belgrade, Serbia
T1  - The use of 3D printing for studying the influence of ionizing radiation on electronic components
SP  - 29
EP  - 30
UR  - https://hdl.handle.net/21.15107/rcub_cer_5661
ER  - 

@conference{
author = "Ilić, Stefan and Vorkapić, Miloš and Ivanov, Toni and Svorcan, Jelena",
year = "2021",
abstract = "The application of additive technology gives a designer more freedom in designing and defining the optimal product design. Also, it is possible to make a model with different materials that have different mechanical properties in order to meet different requirements in different places inside and outside of the part. In this paper, a 3D printer Wanhao Duplicator, type i3 plus, made in the People's Republic of China, was used for the realization of the elements of a mechanical mounting system. It is a desktop 3D printer with a maximum printable area of 200 x 200 x 180 mm3, nozzle diameter of 0.1-0.4 mm, and printing speed of 10-100 mm/s (see Figure 3). For the realization of the model, the chosen material was ABS (Acrylonitrile Butadiene Styrene) in the form of a filament (diameter 1.75 mm, manufacturer Wanhao). ABS is an amorphous polymer with the following features: excellent mechanical properties, resistance to elevated temperatures, and resistance to shocks. On the Wanhao printer, the prescribed distance between the nozzle and the plate is 0.1 mm. This is the minimum thickness of a single printed layer in the xy plane. The diameter of the melted thread is 0.1 mm, which is very thin, allowing for a very dense construction of the print along the z axis. All these parameters are essential for the quality of the print. 3D printing technology enabled the custom design and fabrication of a mechanical system intended to be placed in an irradiation room, in order to hold the component whose electric characteristics are being examined. The irradiation room may contain one or more sources of ionizing radiation. Each irradiation room may have a different way of mounting the component under test. Since it is necessary to study a specific electronic component with different ionizing radiation sources (gamma and X-ray), at different dose rates, and located in different irradiation rooms, designing a custom mounting system for each irradiation room is necessary. The cost of making a mechanical mounting system using 3D printing technology is significantly lower compared to other production methods. Thus, the creation of a system for each irradiation room individually becomes more economical. Creating such a system for each irradiation room allows much easier and more accurate positioning of the component, which reduces the error in calculating the dose that the component receives during irradiation. Each mechanical system should allow the installation of printed circuit boards of different sizes, on which the tested electronic components are located. Also, the material from which the mounting system is made must not affect the component during the experiment. Materials used in 3D printing have a negligible effect on the reflection or scattering of high-energy photons because they do not contain atoms with heavy nuclei.",
publisher = "SIRAMM project  - H2020-WIDESPREAD-2018-03 Project No. 857124, Horizon 2020",
journal = "Program and the Book of Abstracts - International Conference East Europe Conference on Additively Manufactured Materials – EECAM21, 2nd-4th September 2021, Belgrade, Serbia",
title = "The use of 3D printing for studying the influence of ionizing radiation on electronic components",
pages = "29-30",
url = "https://hdl.handle.net/21.15107/rcub_cer_5661"
}

Ilić, S., Vorkapić, M., Ivanov, T.,& Svorcan, J.. (2021). The use of 3D printing for studying the influence of ionizing radiation on electronic components. in Program and the Book of Abstracts - International Conference East Europe Conference on Additively Manufactured Materials – EECAM21, 2nd-4th September 2021, Belgrade, Serbia
SIRAMM project  - H2020-WIDESPREAD-2018-03 Project No. 857124, Horizon 2020., 29-30.
https://hdl.handle.net/21.15107/rcub_cer_5661

Ilić S, Vorkapić M, Ivanov T, Svorcan J. The use of 3D printing for studying the influence of ionizing radiation on electronic components. in Program and the Book of Abstracts - International Conference East Europe Conference on Additively Manufactured Materials – EECAM21, 2nd-4th September 2021, Belgrade, Serbia. 2021;:29-30.
https://hdl.handle.net/21.15107/rcub_cer_5661 .

Ilić, Stefan, Vorkapić, Miloš, Ivanov, Toni, Svorcan, Jelena, "The use of 3D printing for studying the influence of ionizing radiation on electronic components" in Program and the Book of Abstracts - International Conference East Europe Conference on Additively Manufactured Materials – EECAM21, 2nd-4th September 2021, Belgrade, Serbia (2021):29-30,
https://hdl.handle.net/21.15107/rcub_cer_5661 .

TY  - CONF
AU  - Svorcan, Jelena
AU  - Peković, Ognjen
AU  - Ivanov, Toni
AU  - Vorkapić, Miloš
PY  - 2020
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3918
AB  - With wind energy extraction constantly increasing, the interest in small-scale urban wind turbines
is also expanding. Given that these machines often work in adverse operating conditions
(Earth’s boundary layer, vortex trails of surrounding objects, small and changeable wind speeds),
additional elements that locally augment wind velocity and facilitate turbine start may be installed.
This paper investigates possible benefits of adding an optimized flow concentrator to a vertical-axis
wind turbine (VAWT) rotor. Three-dimensional, unsteady, turbulent, incompressible flow simulations
of both isolated rotor consisting of three straight blades and a rotor with flow concentrator have been
performed in ANSYS FLUENT by finite volume method for several different operational regimes. This
type of flow simulations is challenging since flow angles are high, numerous flow phenomena and
instabilities are present and the interaction between the blades and detached vortices can be significant.
The rotational motion of the blades is solved by the unsteady Sliding Mesh (SM) approach. Flow
field is modeled by Unsteady Reynolds Averaged Navier-Stokes (URANS) equations with k-ω SST
turbulence model used for closure. Both quantitative and qualitative examinations of the obtained
numerical results are presented. In particular, the two computed power coefficient curves are compared
and the advantages of installing a flow concentrator are accentuated.
AB  - Usled stalnog porasta iskorišćenja energije vetra, interesovanje za male vetroturbine za urbane sredine se takođe širi. Kako ovakve mašine često funkcionišu u nepovoljnim radnim uslovima (Zemljinom graničnom sloju, vrtložnom tragu okolnih objekata, pri maloj i promenljivoj brzini vetra), moguće je instalirati dodatne elemente čija uloga je da lokalno povećaju brzinu kroz rotor i olakšaju pokretanje vetroturbine. Ovaj rad istražuje prednosti dodavanja optimizovanog koncentratora struje vazduha rotoru vetroturbine sa vertikalnom osom obrtanja. Prostorne, nestacionarne simulacije turbulentnog, nestišljivog opstrujavanja izolovanog rotora koji sadrži tri prave lopatice kao i rotora sa koncentratorom izvedene su u softverskom paketu ANSYS FLUENT metodom konačnih zapremina za nekoliko različitih radnih režima. Ova vrsta proračuna je izazovna jer su napadni uglovi visoki, javljaju se brojni strujni fenomeni i nestabilnosti dok interakcija između lopatica i odvojenih vrtloga može biti značajna.Obrtno kretanje lopatica rešeno je pristupom klizajućih mreža. Strujno polje modelovano je nestacionarnim Navije-Stoksovim jednačinama osrednjenim Rejnoldsovom statistikom (URANS) koje su zatvorene k-ω SST turbulentnim modelom. Prikazane su i kvantitativne i kvalitativne analize dobijenih numeričkih rezultata. Naročito je izvršeno poređenje dve krive koeficijenta snage i naglašene su prednosti instaliranja koncentratora struje vazduha.
PB  - Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije - SMEITS, Beograd
C3  - 8th International Conference on Renewable Electrical Power Sources (8. Međunarodna konferencija o obnovljivim izvorima električne energije), ICREPS 2020, October 16, Belgrade, Serbia
T1  - Numerical evaluation of aerodynamic performances of vertical-axis wind turbine rotor with flow concentrator
SP  - 135
EP  - 141
UR  - https://hdl.handle.net/21.15107/rcub_cer_3918
ER  - 

@conference{
author = "Svorcan, Jelena and Peković, Ognjen and Ivanov, Toni and Vorkapić, Miloš",
year = "2020",
abstract = "With wind energy extraction constantly increasing, the interest in small-scale urban wind turbines
is also expanding. Given that these machines often work in adverse operating conditions
(Earth’s boundary layer, vortex trails of surrounding objects, small and changeable wind speeds),
additional elements that locally augment wind velocity and facilitate turbine start may be installed.
This paper investigates possible benefits of adding an optimized flow concentrator to a vertical-axis
wind turbine (VAWT) rotor. Three-dimensional, unsteady, turbulent, incompressible flow simulations
of both isolated rotor consisting of three straight blades and a rotor with flow concentrator have been
performed in ANSYS FLUENT by finite volume method for several different operational regimes. This
type of flow simulations is challenging since flow angles are high, numerous flow phenomena and
instabilities are present and the interaction between the blades and detached vortices can be significant.
The rotational motion of the blades is solved by the unsteady Sliding Mesh (SM) approach. Flow
field is modeled by Unsteady Reynolds Averaged Navier-Stokes (URANS) equations with k-ω SST
turbulence model used for closure. Both quantitative and qualitative examinations of the obtained
numerical results are presented. In particular, the two computed power coefficient curves are compared
and the advantages of installing a flow concentrator are accentuated., Usled stalnog porasta iskorišćenja energije vetra, interesovanje za male vetroturbine za urbane sredine se takođe širi. Kako ovakve mašine često funkcionišu u nepovoljnim radnim uslovima (Zemljinom graničnom sloju, vrtložnom tragu okolnih objekata, pri maloj i promenljivoj brzini vetra), moguće je instalirati dodatne elemente čija uloga je da lokalno povećaju brzinu kroz rotor i olakšaju pokretanje vetroturbine. Ovaj rad istražuje prednosti dodavanja optimizovanog koncentratora struje vazduha rotoru vetroturbine sa vertikalnom osom obrtanja. Prostorne, nestacionarne simulacije turbulentnog, nestišljivog opstrujavanja izolovanog rotora koji sadrži tri prave lopatice kao i rotora sa koncentratorom izvedene su u softverskom paketu ANSYS FLUENT metodom konačnih zapremina za nekoliko različitih radnih režima. Ova vrsta proračuna je izazovna jer su napadni uglovi visoki, javljaju se brojni strujni fenomeni i nestabilnosti dok interakcija između lopatica i odvojenih vrtloga može biti značajna.Obrtno kretanje lopatica rešeno je pristupom klizajućih mreža. Strujno polje modelovano je nestacionarnim Navije-Stoksovim jednačinama osrednjenim Rejnoldsovom statistikom (URANS) koje su zatvorene k-ω SST turbulentnim modelom. Prikazane su i kvantitativne i kvalitativne analize dobijenih numeričkih rezultata. Naročito je izvršeno poređenje dve krive koeficijenta snage i naglašene su prednosti instaliranja koncentratora struje vazduha.",
publisher = "Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije - SMEITS, Beograd",
journal = "8th International Conference on Renewable Electrical Power Sources (8. Međunarodna konferencija o obnovljivim izvorima električne energije), ICREPS 2020, October 16, Belgrade, Serbia",
title = "Numerical evaluation of aerodynamic performances of vertical-axis wind turbine rotor with flow concentrator",
pages = "135-141",
url = "https://hdl.handle.net/21.15107/rcub_cer_3918"
}

Svorcan, J., Peković, O., Ivanov, T.,& Vorkapić, M.. (2020). Numerical evaluation of aerodynamic performances of vertical-axis wind turbine rotor with flow concentrator. in 8th International Conference on Renewable Electrical Power Sources (8. Međunarodna konferencija o obnovljivim izvorima električne energije), ICREPS 2020, October 16, Belgrade, Serbia
Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije - SMEITS, Beograd., 135-141.
https://hdl.handle.net/21.15107/rcub_cer_3918

Svorcan J, Peković O, Ivanov T, Vorkapić M. Numerical evaluation of aerodynamic performances of vertical-axis wind turbine rotor with flow concentrator. in 8th International Conference on Renewable Electrical Power Sources (8. Međunarodna konferencija o obnovljivim izvorima električne energije), ICREPS 2020, October 16, Belgrade, Serbia. 2020;:135-141.
https://hdl.handle.net/21.15107/rcub_cer_3918 .

Svorcan, Jelena, Peković, Ognjen, Ivanov, Toni, Vorkapić, Miloš, "Numerical evaluation of aerodynamic performances of vertical-axis wind turbine rotor with flow concentrator" in 8th International Conference on Renewable Electrical Power Sources (8. Međunarodna konferencija o obnovljivim izvorima električne energije), ICREPS 2020, October 16, Belgrade, Serbia (2020):135-141,
https://hdl.handle.net/21.15107/rcub_cer_3918 .

TY  - JOUR
AU  - Baltić, Marija
AU  - Svorcan, Jelena
AU  - Perić, Bojan
AU  - Vorkapić, Miloš
AU  - Ivanov, Toni
AU  - Peković, Ognjen
PY  - 2019
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2997
AB  - In order to investigate both static and dynamic characteristics of composite plates and validate a contemporary, non-invasive experimental technique a comparative experimental and numerical analysis was performed. Three, geometrically the same but different in ply orientation, carbon-epoxy laminates were tested in both healthy and damaged conditions. Damages were inflicted in a shape of horizontal crack. Experiments and numerical simulations were performed by digital image correlation (DIC) and finite element method (FEM), respectively. Obtained time-responses of the tested structures were fast Fourier transformed (FFT) to frequency domain for a clearer
understanding of natural frequencies and oscillation modes. Results are presented in tabular and graphical form. The overall correspondence of two sets of structural displacements is satisfactory. Some discrepancies might be contributed to the idealized geometry and restraint consideration. Also, due to the fast damping of higher tones, the errors in determining higher natural frequencies increase but still remain in 5 % range.
PB  - Springer
T2  - Journal of Mechanical Science and Technology
T1  - Comparative numerical and experimental investigation of static and dynamic characteristics of composite plates
VL  - 33
IS  - 6
SP  - 2597
EP  - 2603
DO  - 10.1007/s12206-019-0507-7
ER  - 

@article{
author = "Baltić, Marija and Svorcan, Jelena and Perić, Bojan and Vorkapić, Miloš and Ivanov, Toni and Peković, Ognjen",
year = "2019",
abstract = "In order to investigate both static and dynamic characteristics of composite plates and validate a contemporary, non-invasive experimental technique a comparative experimental and numerical analysis was performed. Three, geometrically the same but different in ply orientation, carbon-epoxy laminates were tested in both healthy and damaged conditions. Damages were inflicted in a shape of horizontal crack. Experiments and numerical simulations were performed by digital image correlation (DIC) and finite element method (FEM), respectively. Obtained time-responses of the tested structures were fast Fourier transformed (FFT) to frequency domain for a clearer
understanding of natural frequencies and oscillation modes. Results are presented in tabular and graphical form. The overall correspondence of two sets of structural displacements is satisfactory. Some discrepancies might be contributed to the idealized geometry and restraint consideration. Also, due to the fast damping of higher tones, the errors in determining higher natural frequencies increase but still remain in 5 % range.",
publisher = "Springer",
journal = "Journal of Mechanical Science and Technology",
title = "Comparative numerical and experimental investigation of static and dynamic characteristics of composite plates",
volume = "33",
number = "6",
pages = "2597-2603",
doi = "10.1007/s12206-019-0507-7"
}

Baltić, M., Svorcan, J., Perić, B., Vorkapić, M., Ivanov, T.,& Peković, O.. (2019). Comparative numerical and experimental investigation of static and dynamic characteristics of composite plates. in Journal of Mechanical Science and Technology
Springer., 33(6), 2597-2603.
https://doi.org/10.1007/s12206-019-0507-7

Baltić M, Svorcan J, Perić B, Vorkapić M, Ivanov T, Peković O. Comparative numerical and experimental investigation of static and dynamic characteristics of composite plates. in Journal of Mechanical Science and Technology. 2019;33(6):2597-2603.
doi:10.1007/s12206-019-0507-7 .

Baltić, Marija, Svorcan, Jelena, Perić, Bojan, Vorkapić, Miloš, Ivanov, Toni, Peković, Ognjen, "Comparative numerical and experimental investigation of static and dynamic characteristics of composite plates" in Journal of Mechanical Science and Technology, 33, no. 6 (2019):2597-2603,
https://doi.org/10.1007/s12206-019-0507-7 . .

TY  - CONF
AU  - Perić, Bojan
AU  - Simonović, Aleksandar
AU  - Stupar, Slobodan
AU  - Vorkapić, Miloš
AU  - Svorcan, Jelena
AU  - Peković, Ognjen
PY  - 2018
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3917
AB  - Metal membranes are the thin circular plates. For transducers and pressure transmitters, it is
assumed that the membrane is loaded with uniform load over the entire surface. In case that the membrane is
rigid over the edge, then it is called a diaphragm. In general, the membranes are divided into flat and
corrugated. Corrugated diaphragms can resist much higher pressure than flat diaphragms and they are used
mainly in the low pressure area. In contact with various aggressive fluids, membranes are most commonly
made of high alloy austenitic steel, which have high corrosion resistance, have good spring properties and
they are stable at different temperatures. The deflection analyses of corrugated diaphragms are very important
in sensitivity of transducers/transmitters. The application of corrugated diaphragms gives possibility to control
sensitivity of thin diaphragms by geometrical parameters. In this paper numerical and experimental structural
analysis of a thin corrugated diaphragm 19 mm diameter, with variable material thickness and corrugation
number is presented. Experimental tests are conducted on a corrugated stainless steel (AISI 316) diaphragm.
The measured deflections are compared with numerical results in ANSYS software package. The results
showed small deviations between numerical and experimental data, which is very important for further
diaphragm application of measurement instruments.
PB  - Faculty of Engineering, University of Rijeka, Croatia
C3  - International Conference on Innovative Technologies IN-TECH 2018, September 5-7, 2018, Zagreb, Croatia
T1  - Numerical analysis of stainless steel diaphragm for low pressure measurement
SP  - 125
EP  - 128
UR  - https://hdl.handle.net/21.15107/rcub_cer_3917
ER  - 

@conference{
author = "Perić, Bojan and Simonović, Aleksandar and Stupar, Slobodan and Vorkapić, Miloš and Svorcan, Jelena and Peković, Ognjen",
year = "2018",
abstract = "Metal membranes are the thin circular plates. For transducers and pressure transmitters, it is
assumed that the membrane is loaded with uniform load over the entire surface. In case that the membrane is
rigid over the edge, then it is called a diaphragm. In general, the membranes are divided into flat and
corrugated. Corrugated diaphragms can resist much higher pressure than flat diaphragms and they are used
mainly in the low pressure area. In contact with various aggressive fluids, membranes are most commonly
made of high alloy austenitic steel, which have high corrosion resistance, have good spring properties and
they are stable at different temperatures. The deflection analyses of corrugated diaphragms are very important
in sensitivity of transducers/transmitters. The application of corrugated diaphragms gives possibility to control
sensitivity of thin diaphragms by geometrical parameters. In this paper numerical and experimental structural
analysis of a thin corrugated diaphragm 19 mm diameter, with variable material thickness and corrugation
number is presented. Experimental tests are conducted on a corrugated stainless steel (AISI 316) diaphragm.
The measured deflections are compared with numerical results in ANSYS software package. The results
showed small deviations between numerical and experimental data, which is very important for further
diaphragm application of measurement instruments.",
publisher = "Faculty of Engineering, University of Rijeka, Croatia",
journal = "International Conference on Innovative Technologies IN-TECH 2018, September 5-7, 2018, Zagreb, Croatia",
title = "Numerical analysis of stainless steel diaphragm for low pressure measurement",
pages = "125-128",
url = "https://hdl.handle.net/21.15107/rcub_cer_3917"
}

Perić, B., Simonović, A., Stupar, S., Vorkapić, M., Svorcan, J.,& Peković, O.. (2018). Numerical analysis of stainless steel diaphragm for low pressure measurement. in International Conference on Innovative Technologies IN-TECH 2018, September 5-7, 2018, Zagreb, Croatia
Faculty of Engineering, University of Rijeka, Croatia., 125-128.
https://hdl.handle.net/21.15107/rcub_cer_3917

Perić B, Simonović A, Stupar S, Vorkapić M, Svorcan J, Peković O. Numerical analysis of stainless steel diaphragm for low pressure measurement. in International Conference on Innovative Technologies IN-TECH 2018, September 5-7, 2018, Zagreb, Croatia. 2018;:125-128.
https://hdl.handle.net/21.15107/rcub_cer_3917 .

Perić, Bojan, Simonović, Aleksandar, Stupar, Slobodan, Vorkapić, Miloš, Svorcan, Jelena, Peković, Ognjen, "Numerical analysis of stainless steel diaphragm for low pressure measurement" in International Conference on Innovative Technologies IN-TECH 2018, September 5-7, 2018, Zagreb, Croatia (2018):125-128,
https://hdl.handle.net/21.15107/rcub_cer_3917 .