Largeeddy simulation of rotating channel flows using a localized dynamic model
Abstract
Most applications of the dynamic subgridscale stress model use volume or planaraveraging to avoid illconditioning of the model coefficient, which may result in numerical instabilities. A spatiallyvarying coefficient is also mathematically inconsistent with the model derivation. A localization procedure is proposed here that removes the mathematical inconsistency to any desired order of accuracy in time. This model is applied to the simulation of rotating channel flow, and results in improved prediction of the turbulence statistics.
 Publication:

In AGARD
 Pub Date:
 December 1994
 Bibcode:
 1994adle.agarQ....P
 Keywords:

 Channel Flow;
 Computational Fluid Dynamics;
 Computerized Simulation;
 Dynamic Models;
 Fluid Flow;
 Incompressible Flow;
 Rotational States;
 Statistical Analysis;
 Stress Analysis;
 Turbulent Flow;
 Vortices;
 Boundary Conditions;
 Chebyshev Approximation;
 Continuity Equation;
 Dynamic Loads;
 Grid Generation (Mathematics);
 NavierStokes Equation;
 Stress Tensors;
 Velocity Distribution;
 Fluid Mechanics and Heat Transfer