Direct numerical simulation of turbulent Taylor–Couette flow

Application of HPCN to Direct Numerical Simulation of Turbulent Flow

This poster shows how HPCN can be used as a pathnding tool for turbulence research. The parallelization of direct numerical simulation of turbulent ow using the data-parallel model and Fortran 95 constructs is treated, both on a shared memory and a distributed memory computer. Introduction Computer simulation has become a major tool for studying turbulent ow in many technological and environmen...

Studies of turbulent boundary layer flow through direct numerical simulation

The objective has been to study turbulent boundary layers under adverse pressure gradients (APG) through direct numerical simulation (DNS). The numerical code is based on a pseudo-spectral technique which is suitable for the simple geometry (flat plate) considered here. A large effort has been put into the optimization of the numerical code on various super computers. Five large simulations hav...

Direct Numerical Simulation of Reacting Turbulent Multi-Species Channel Flow

Direct numerical simulation of turbulent flow over a compliant surface

Direct numerical simulation of turbulent channel flow over a compliant surface has been performed to evaluate the friction drag reduction effect. It is found that a slight drag reduction is observed over a compliant surface. This observation indicates that drag reduction is possible using a compliant surface that is deformed passively by wall pressure fluctuation. A small wall displacement and ...

Direct numerical simulation of turbulent Taylor–Couette flow

We investigate the dynamical and statistical features of turbulent Taylor–Couette flow (for a radius ratio 0.5) through three-dimensional direct numerical simulations (DNS) at Reynolds numbers ranging from 1000 to 8000. We show that in three-dimensional space the Görtler vortices are randomly distributed in banded regions on the wall, concentrating at the outflow boundaries of Taylor vortex cel...