Evaluation of the Anisotropic Minimum-Dissipation (AMD) Subgrid Scale Model in Treating Channel Flows Using OpenFOAM

In this study, a recently developed eddy viscosity modelcalled anisotropic minimum-dissipation (AMD) model isapplied as an alternative method for the Smagorinsky model.AMD belongs to the minimum dissipation type of thesubgrid scale models which showed numerous advantagescompared to the Smagorinsky model, e.g., lesscomputational cost, switching off in laminar flows, and itsconsistency with the exact subfilter stress tensor on bothisotropic and anisotropic grids. In this study, AMD model isdeveloped for anisotropic grids to be applied to theOpenFOAM CFD tool box as an open source programmingsoftware. The validation of the code is accessed bysimulating a turbulent channel flow using an appropriatecomputational grid. The accuracy of the AMD model iscompared with the Smagorinsky models showing that theobtained results are in very suitable agreement with thedirect numerical simulation (DNS) results.