平行平板間乱流のLESにおける有限要素法の各種計算手法の比較

概要

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In this paper, the effects of the discretization methods of the convection term and the calculation methods of the mass matrix of the unsteady term for the finite-element method (FEM) are discussed with regard to turbulent channel flow and using Large Eddy Simulation (LES). A FEM scheme is based on the Fractional-Step (FS) method with same-order interpolation for velocity and pressure. The Smagorinsky model is applied to the turbulence model to approximate the Reynolds stress term. The pressure Poisson equation is solved by the element by element scaled Conjugate Gradient (CG) method. The obtained results are compared with each other. The effects of the various techniques for FEM are estimated.
東海大学の論文