科研之友
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摘要
The particle dispersion in a backward-facing step flow was numerically studied. Large eddy simulation (LES) was used to simulate the gas flow and a filtered density FDF) transport equation was derived to solve the sub-grid scale eddies seen by the Lagrangian tracked particles. The LES/FDF model was validated by experiment and the evolution process of the vortex structures was clearly demonstrated. The numerical results of particle dispersion obtained with and without the FDF model were compared; it showed that the FDF model could apparently reflect the influence of sub-grid scale eddies on the particle dispersion in the gas-particle two-phase flow.
- 出版日期2012-11
- 单位浙江大学
