新しい斜め風上差分法による数値計算誤差の低減

概要

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Numerical viscosity is evaluated for a difference scheme of high Reynolds number flow and a new skew upwind scheme, having the following characteristics, is proposed : (1) The value at the center of the calculational mesh is assumed to flow out at the outflow boundary of the mesh, and the volume weighted value of the upwind points is used for the inlet boundary. (2) The net transported quantity varies due to the flow direction, which is obtained by the remainder of the outflow from the inflow quantity. (3) Numerical oscillation is suppressed and the computational resolution is superior to that of the upwind scheme for a steep temperature field with pure convection. (4) The direction of the mainflow agrees with the experimental value which was obtained by Tanaka et al..
社団法人日本機械学会の論文
1988-06-25