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The performance of the five different SGS models is presented for LES of low-Rem MHD turbulence and comparisons are made to an in-house DNS results at varying magnetic field strengths. Three regularization models, and the classical non-dynamic and dynamic Smagorinsky models are here. Two different cases are considered here: The first is a homogeneous turbulence case, while the second the Taylor-Green vortex (TGV) case.
The performance of the five different SGS models is presented for LES of low-Rem MHD turbulence and comparisons are made to an in-house DNS results at varying magnetic field strengths. Three regularization models, and the classical non-dynamic and dynamic Smagorinsky models are here. Two different cases are considered here: The first is a homogeneous turbulence case, while the second the Taylor-Green vortex (TGV) case.
KC and Chandy, 2015
KC and Chandy, 2015
Snapshot of vorticity magnitude contours of homogeneous magnetohydrodynamic (MHD) turbulence obtained from (a) direct numerical simulations (DNS) and large eddy simulations using (b) non-dynamic Smagorinsky (c) dynamic Smagorinsky (d) Leray-alpha (e) LANS-alpha and (f) Clark-alpha SGS models; Magnetic field is applied in the vertical direction and stretching of the flow field in the corresponding direction is evident.
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