Abstract
To realize LES for a multiphase turbulent flow with a quite large number of particles, the authors have recently developed a new multiphase LES, named “GAL-LES model”. The GAL (Grid- Averaged Lagrangian) model is based on a grid-averaging operation for a Lagrangian-type equation of a particle motion and reallocation procedure of a particle cloud with its centroid movement to each grid. The GAL-LES model has been applied to a particle plume and a sheet-flow-type sediment transport, showing that the present model is found to simulate the essential features of the large-eddy structure and gives good agreements with the existing experimental data.
