Campus Units
Chemical and Biological Engineering, Mechanical Engineering, Ames Laboratory
Document Type
Article
Publication Version
Submitted Manuscript
Publication Date
11-2-2019
Journal or Book Title
Chemical Engineering Science
Volume
207
First Page
663
Last Page
671
DOI
10.1016/j.ces.2019.06.054
Abstract
The Eulerian–Eulerian two-fluid model is widely used for computational fluid dynamics simulations of gas–solid flows. For non-isothermal flows, the averaged conservation equations solved in the two-fluid model require closures for drag, gas–solid heat transfer, pseudo-turbulent velocity fluctuations and the pseudo-turbulent heat flux (PTHF). However, the pseudo-turbulence terms are usually neglected in two-fluid simulations due to the lack of accurate correlations. With the increase in computational power, closures for these terms are now available from particle-resolved direct-numerical simulation (PR-DNS). Here, the PTHF closure as well as the heat-transfer closure (i.e., the Nusselt number) extracted from PR-DNS are implemented in the two-fluid thermal energy equation in OpenFOAM. The implementation is validated by comparing the simulation results with the PR-DNS data for the temperature profiles. Based on the analysis of the thermal energy budget, the PTHF can have a significant contribution and neglecting it can lead to large errors.
Copyright Owner
Elsevier Ltd.
Copyright Date
2019
Language
en
File Format
application/pdf
Recommended Citation
Peng, Cheng; Kong, B.; Zhou, Jiazhong; Sun, B.; Passalacqua, Alberto; Subramaniam, Shankar; and Fox, Rodney O., "Implementation of pseudo-turbulence closures in an Eulerian–Eulerian two-fluid model for non-isothermal gas–solid flow" (2019). Mechanical Engineering Publications. 404.
https://lib.dr.iastate.edu/me_pubs/404
Comments
This is a manuscript of an article published as Peng, C., B. Kong, J. Zhou, B. Sun, A. Passalacqua, S. Subramaniam, and R. O. Fox. "Implementation of pseudo-turbulence closures in an Eulerian–Eulerian two-fluid model for non-isothermal gas–solid flow." Chemical Engineering Science 207 (2019): 663-671. DOI: 10.1016/j.ces.2019.06.054. Posted with permission.