Abstract
In the present study, large eddy simulations with Van Driest damping function is used to predict wall bounded channel flows and rotor-stator cavity flows. The numerical procedure is based on the finite volume approach with staggered grid arrangement. The spatial and temporal schemes adopted are center differencing and ADI, which are second order accurate. One of the major efforts of the present research is to parallelize the LES programs. In the present parallel implementation, the single program multiple data (SPMD) environment is adopted. The target machines are a 16-node IBM SP2 (power 2), a 16-node IBM SMP (power 3) and a 32-node PC clusters. Linear or even super linear results are obtained for the large problem size using IBM SP2 and SMP machines. The scalability of the PC cluster is not compatible with the IBM machines. However, the PC clusters does provide a cost effective way of scientific computations. The fully developed channel flows with Reynolds number of and the rotor-stator cavity flows are adopted to examine the capability of the LES scheme. The results are examined by comparing the predicted flow quantities with DNS data and available measurements.