Modeling subgrid-scale effects on particles by approximate deconvolution

The approximate deconvolution is implemented to reconstruct the instantaneous velocities from the filtered velocities before using them in the momentum equations of particles in the large-eddy simulation (LES) of particle-laden turbulent flows. It is shown that the various statistics of particles obtained through deconvolution are in good agreement with those obtained by the direct numerical simulation (DNS) by conducting a priori and a posteriori tests in a particle-laden homogeneous shear turbulent flow. On the other hand, the neglect of the effects of subgrid scales on the particles results in discrepancies between DNS and LES results. (c) 2005 American Institute of Physics.