Comparison of Gas Particle Flow Prediction from Large Eddy Simulation and Reynolds-Averaging Navier-Stokes Modeling

In order to account for the effect of particle existence on gas-particle turbulence flow in large-eddy simulation （LES）, a new gas-particle turbulent kinetic energy subgrid-scale （SGS） turbulence model is established, and the effect of particle wake is also considered in gas turbulent kinetic energy...

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Bibliographic Details
Published in:Shanghai jiao tong da xue xue bao 2010-10, Vol.15 (5), p.622-625
Main Author: 曾卓雄 孙得川 周力行
Format: Article
Language:English
Subjects:
Architecture
Computer Science
Electrical Engineering
Engineering
Life Sciences
Materials Science
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Summary:In order to account for the effect of particle existence on gas-particle turbulence flow in large-eddy simulation （LES）, a new gas-particle turbulent kinetic energy subgrid-scale （SGS） turbulence model is established, and the effect of particle wake is also considered in gas turbulent kinetic energy SGS turbulence model. Simulation of gas-particle turbulence flow in backward-facing step is carried out by LES using present model and by unified second-order moment （USM） model. The prediction statistical results including mean velocity and fluctuation velocity by LES using present model are in reasonable agreement with the experimental results. It is shown that present model is with higher calculating accuracy than USM model, which indicates that the turbulent kinetic energy SGS turbulence model is suitable.
ISSN:1007-1172
1995-8188
DOI:10.1007/s12204-010-1058-3