High Resolution Direct Numerical Simulation of Homogeneous Shear Turbulence

Summary

Benefitting from the modern computer technology, Direct numerical simulation (DNS) plays a more and more important role in studying turbulence. To obtain some fine topological structures of turbulent flows, a finer resolution is needed. Because of the better physical properties, larger grid number simulations are more appealing, which, however, become more time-consuming and require more hardware resources. The only method to achieve this is MPI parallelization. In this report presents first some post-processed results for an overall understanding of the physical problem. Then mainly the relevant optimization techniques on NEC SX-8 have been discussed and the reported performance testing showed that the code could run at a reasonable level.