Prediction of interphase drag coefficient and bed expansion using a variational model for fluidization of small spherical particles
Samo za registrovane korisnike
2020
Članak u časopisu (Objavljena verzija)
,
Elsevier
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
In this study, we applied the variational model to fluidization of small spherical particles. Fluidizationexperiments were carried out for spherical particles with 13 diameters between dp= 0.13 and 5.00 mm.We propose a generalized form of our variational model to predict the superficial velocity U and inter-phase drag coefficient ˇ by introducing an exponent n to describe the different dependences of the dragforce Fdon fluid velocity for different particle sizes (different flow regimes). By comparing the predictionswith the experimental results, we conclude that n=1 should be used for small particles (dp< 1 mm) andn = 2 for larger particles (dp> 1 mm). This conclusion is generalized by proposing n = 1 for particles withRet< 160 and n = 2 for particles with Ret> 160. The average mean absolute error was 5.49% in calculatingsuperficial velocity for different bed voidages using the modified variational model for all of the particlesexamined. The calculated values of ˇ were compared with va...lues of literature models for particles withdp< 1.0 mm. The average mean absolute error of the modified variational model was 8.02% in calculatingˇ for different bed voidages for all of the particles examined.
Ključne reči:
Calculus of variations / Isoperimetric problem / Bed expansion / Drag coefficient / Fluidization / Spherical particlesIzvor:
Particuology, 2020, 51, 184-192Izdavač:
- Elsevier
Finansiranje / projekti:
- Razvoj efikasnijih hemijsko-inženjerskih procesa zasnovan na istraživanjima fenomena prenosa i principima intenzifikacije procesa (RS-MESTD-Basic Research (BR or ON)-172022)
DOI: 10.1016/j.partic.2019.11.002
ISSN: 1674-2001; 2210-4291
WoS: 000524974900019
Scopus: 2-s2.0-85077152147
Institucija/grupa
IHTMTY - JOUR AU - Đuriš, Mihal AU - Arsenijević, Zorana AU - Garić Grulović, Radmila AU - Kaluđerović-Radoičić, Tatjana PY - 2020 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/3598 AB - In this study, we applied the variational model to fluidization of small spherical particles. Fluidizationexperiments were carried out for spherical particles with 13 diameters between dp= 0.13 and 5.00 mm.We propose a generalized form of our variational model to predict the superficial velocity U and inter-phase drag coefficient ˇ by introducing an exponent n to describe the different dependences of the dragforce Fdon fluid velocity for different particle sizes (different flow regimes). By comparing the predictionswith the experimental results, we conclude that n=1 should be used for small particles (dp< 1 mm) andn = 2 for larger particles (dp> 1 mm). This conclusion is generalized by proposing n = 1 for particles withRet< 160 and n = 2 for particles with Ret> 160. The average mean absolute error was 5.49% in calculatingsuperficial velocity for different bed voidages using the modified variational model for all of the particlesexamined. The calculated values of ˇ were compared with values of literature models for particles withdp< 1.0 mm. The average mean absolute error of the modified variational model was 8.02% in calculatingˇ for different bed voidages for all of the particles examined. PB - Elsevier T2 - Particuology T1 - Prediction of interphase drag coefficient and bed expansion using a variational model for fluidization of small spherical particles VL - 51 SP - 184 EP - 192 DO - 10.1016/j.partic.2019.11.002 ER -
@article{ author = "Đuriš, Mihal and Arsenijević, Zorana and Garić Grulović, Radmila and Kaluđerović-Radoičić, Tatjana", year = "2020", abstract = "In this study, we applied the variational model to fluidization of small spherical particles. Fluidizationexperiments were carried out for spherical particles with 13 diameters between dp= 0.13 and 5.00 mm.We propose a generalized form of our variational model to predict the superficial velocity U and inter-phase drag coefficient ˇ by introducing an exponent n to describe the different dependences of the dragforce Fdon fluid velocity for different particle sizes (different flow regimes). By comparing the predictionswith the experimental results, we conclude that n=1 should be used for small particles (dp< 1 mm) andn = 2 for larger particles (dp> 1 mm). This conclusion is generalized by proposing n = 1 for particles withRet< 160 and n = 2 for particles with Ret> 160. The average mean absolute error was 5.49% in calculatingsuperficial velocity for different bed voidages using the modified variational model for all of the particlesexamined. The calculated values of ˇ were compared with values of literature models for particles withdp< 1.0 mm. The average mean absolute error of the modified variational model was 8.02% in calculatingˇ for different bed voidages for all of the particles examined.", publisher = "Elsevier", journal = "Particuology", title = "Prediction of interphase drag coefficient and bed expansion using a variational model for fluidization of small spherical particles", volume = "51", pages = "184-192", doi = "10.1016/j.partic.2019.11.002" }
Đuriš, M., Arsenijević, Z., Garić Grulović, R.,& Kaluđerović-Radoičić, T.. (2020). Prediction of interphase drag coefficient and bed expansion using a variational model for fluidization of small spherical particles. in Particuology Elsevier., 51, 184-192. https://doi.org/10.1016/j.partic.2019.11.002
Đuriš M, Arsenijević Z, Garić Grulović R, Kaluđerović-Radoičić T. Prediction of interphase drag coefficient and bed expansion using a variational model for fluidization of small spherical particles. in Particuology. 2020;51:184-192. doi:10.1016/j.partic.2019.11.002 .
Đuriš, Mihal, Arsenijević, Zorana, Garić Grulović, Radmila, Kaluđerović-Radoičić, Tatjana, "Prediction of interphase drag coefficient and bed expansion using a variational model for fluidization of small spherical particles" in Particuology, 51 (2020):184-192, https://doi.org/10.1016/j.partic.2019.11.002 . .