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Sensitivity analysis of the variational model for the particulate expansion of fluidized beds

Authorized Users Only
2020
Authors
Đuriš, Mihal
Arsenijević, Zorana
Kaluđerović-Radoičić, Tatjana
Article (Published version)
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Abstract
Fluidization experiments were performed by using spherical and non-spherical particles to examine the sensitivity of the variational model to three input parameters: Umf, εmf and Ut. Several correlations for Umf, εmf and Ut were tested and the results were compared with the experimental values. The variational model’s ability to predict the bed expansion (in the form of U=f(ε)) and the interphase drag coefficient was investigated by varying the three input variables by ±20% compared with their experimental values. The variational model for the bed expansion showed the greatest sensitivity to changes in the εmf values. The overestimated values of εmf resulted in underestimating U(ε), and likewise, the underestimated values of εmf resulted in overestimating U(ε). The variational model’s sensitivity to changes in the Umf values is also important. Contrary to εmf, overestimating the values of Umf resulted in overestimating U(ε). The model’s least sensitivity was to the Ut value variation, ...which, if varied by ±20% compared with their experimental values, had a negligible effect on the prediction quality. This study aims to examine the sensitivity of the variational model to Umf, Ut and εmf values obtained from various correlations, in the absence of experimental values.

Keywords:
bed expansion / Fluidization / model sensitivity analysis / particle-fluid interphase drag coefficient / variational model
Source:
Particulate Science and Technology, 2020, 38, 1, 95-104
Publisher:
  • Taylor and Francis Inc.
Funding / projects:
  • The development of efficient chemical-engineering processes based on the transport phenomena research and process intensification principles (RS-172022)

DOI: 10.1080/02726351.2018.1508100

ISSN: 0272-6351

WoS: 000508075100012

Scopus: 2-s2.0-85059937161
[ Google Scholar ]
1
URI
https://cer.ihtm.bg.ac.rs/handle/123456789/2399
Collections
  • Radovi istraživača / Researchers' publications
Institution/Community
IHTM
TY  - JOUR
AU  - Đuriš, Mihal
AU  - Arsenijević, Zorana
AU  - Kaluđerović-Radoičić, Tatjana
PY  - 2020
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2399
AB  - Fluidization experiments were performed by using spherical and non-spherical particles to examine the sensitivity of the variational model to three input parameters: Umf, εmf and Ut. Several correlations for Umf, εmf and Ut were tested and the results were compared with the experimental values. The variational model’s ability to predict the bed expansion (in the form of U=f(ε)) and the interphase drag coefficient was investigated by varying the three input variables by ±20% compared with their experimental values. The variational model for the bed expansion showed the greatest sensitivity to changes in the εmf values. The overestimated values of εmf resulted in underestimating U(ε), and likewise, the underestimated values of εmf resulted in overestimating U(ε). The variational model’s sensitivity to changes in the Umf values is also important. Contrary to εmf, overestimating the values of Umf resulted in overestimating U(ε). The model’s least sensitivity was to the Ut value variation, which, if varied by ±20% compared with their experimental values, had a negligible effect on the prediction quality. This study aims to examine the sensitivity of the variational model to Umf, Ut and εmf values obtained from various correlations, in the absence of experimental values.
PB  - Taylor and Francis Inc.
T2  - Particulate Science and Technology
T1  - Sensitivity analysis of the variational model for the particulate expansion of fluidized beds
VL  - 38
IS  - 1
SP  - 95
EP  - 104
DO  - 10.1080/02726351.2018.1508100
ER  - 
@article{
author = "Đuriš, Mihal and Arsenijević, Zorana and Kaluđerović-Radoičić, Tatjana",
year = "2020",
abstract = "Fluidization experiments were performed by using spherical and non-spherical particles to examine the sensitivity of the variational model to three input parameters: Umf, εmf and Ut. Several correlations for Umf, εmf and Ut were tested and the results were compared with the experimental values. The variational model’s ability to predict the bed expansion (in the form of U=f(ε)) and the interphase drag coefficient was investigated by varying the three input variables by ±20% compared with their experimental values. The variational model for the bed expansion showed the greatest sensitivity to changes in the εmf values. The overestimated values of εmf resulted in underestimating U(ε), and likewise, the underestimated values of εmf resulted in overestimating U(ε). The variational model’s sensitivity to changes in the Umf values is also important. Contrary to εmf, overestimating the values of Umf resulted in overestimating U(ε). The model’s least sensitivity was to the Ut value variation, which, if varied by ±20% compared with their experimental values, had a negligible effect on the prediction quality. This study aims to examine the sensitivity of the variational model to Umf, Ut and εmf values obtained from various correlations, in the absence of experimental values.",
publisher = "Taylor and Francis Inc.",
journal = "Particulate Science and Technology",
title = "Sensitivity analysis of the variational model for the particulate expansion of fluidized beds",
volume = "38",
number = "1",
pages = "95-104",
doi = "10.1080/02726351.2018.1508100"
}
Đuriš, M., Arsenijević, Z.,& Kaluđerović-Radoičić, T.. (2020). Sensitivity analysis of the variational model for the particulate expansion of fluidized beds. in Particulate Science and Technology
Taylor and Francis Inc.., 38(1), 95-104.
https://doi.org/10.1080/02726351.2018.1508100
Đuriš M, Arsenijević Z, Kaluđerović-Radoičić T. Sensitivity analysis of the variational model for the particulate expansion of fluidized beds. in Particulate Science and Technology. 2020;38(1):95-104.
doi:10.1080/02726351.2018.1508100 .
Đuriš, Mihal, Arsenijević, Zorana, Kaluđerović-Radoičić, Tatjana, "Sensitivity analysis of the variational model for the particulate expansion of fluidized beds" in Particulate Science and Technology, 38, no. 1 (2020):95-104,
https://doi.org/10.1080/02726351.2018.1508100 . .

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