Analysis of SGS effects on dispersed particles in LES of heated channel flow
Large-eddy simulation of a turbulent, non-isothermal channel flow is performed. The Lagrangian approach is followed to compute the dispersed phase (heavy particles) under the assumption of one-way momentum and energy coupling with the carrier phase. A stochastic model for the residual fluid velocity along the particle trajectories is applied to account for subfilter flow effects on particles. It is shown that both the particle dynamics and temperature are affected by the model. Results for the carrier and dispersed phases are presented in terms of their velocity and thermal statistics. The need for further model improvement is discussed.
KeywordsTwo-phase dispersed flow Heat transfer Large-eddy simulation Lagrangian-Eulerian approach Subgrid-scale effects on particles
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