Direct numerical simulation of homogeneous turbulent shear flow
Abstract
A direct numerical simulation (DNS) of 3D, incompressible, timedependent NavierStokes and continuity equations was performed in homogeneous turbulent shear flows. The algorithm originally developed by Rogallo is revised to make costefficient calculations. Due to the linear transverse system used, which is consistent with periodic condition, the computational grid deforms with respect to the mean flow. Thus, the remeshing procedure is applied at regular intervals to allow the simulation to progress for a substantial time. Removal of aliasing errors is achieved by truncation and random phaseshift methods. Applying this hybrid method, residual errors become of the same order of the time integration. The simulated results of turbulence quantities are in good agreement with those obtained by Rogallo.
 Publication:

5th Numerical Fluid Dynamics Symposium
 Pub Date:
 1991
 Bibcode:
 1991nfd..symp..361M
 Keywords:

 Digital Simulation;
 Homogeneous Turbulence;
 Incompressible Flow;
 Shear Flow;
 Three Dimensional Flow;
 Turbulent Flow;
 Computational Grids;
 Continuity Equation;
 NavierStokes Equation;
 Time Dependence;
 Fluid Mechanics and Heat Transfer