Bulletin of the American Physical Society
71st Annual Meeting of the APS Division of Fluid Dynamics
Volume 63, Number 13
Sunday–Tuesday, November 18–20, 2018; Atlanta, Georgia
Session A09: Computational Fluid Dynamics Methods for Multiphase Flows I
8:00 AM–9:57 AM,
Sunday, November 18, 2018
Georgia World Congress Center
Room: B214
Chair: Sivaramakrishnan Balachandar, University of Florida
Abstract ID: BAPS.2018.DFD.A09.4
Abstract: A09.00004 : Eulerian-Lagrangian simulation of non-isothermal particle-laden flow*
8:39 AM–8:52 AM
Presenter:
Farid Rousta
(South Dakota School of Mines & Technology)
Authors:
Farid Rousta
(South Dakota School of Mines & Technology)
Bamdad Lessani
(South Dakota Sch Mines & Tech, South Dakota Sch Mines & Tech)
Direct numerical simulations of particle-laden channel flow with walls kept at different temperatures are performed. The position, velocity and temperature of each particle are computed in time with a Lagrangian approach, with a two-way coupling between particles and carrier flow in the heat and momentum equations. The focus of this study is on the effect of direct particle-to-wall heat conduction for wall-colliding particles. A model based on Hertzian contact is implemented in the in-house Eulerian-Lagrangian solver. It is shown that for smooth walls (with a very thin layer of fluid between the particles and wall during collision), and metallic particles, the particle-to-wall heat conduction is not negligible, and it can even be comparable with the convective fluid-to-wall heat transfer. The results are presented in terms of different average wall roughness and particle mass loadings.
*This study was supported by funding provided by South Dakota Board of Regents.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.DFD.A09.4
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