有限要素法による平面壁上の複数突起列まわりの流れの数値解析

概要

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This paper describes numerical analysis for the flow behavior in the groove related to the turbulence of the flow over rows of two-dimensional ribs on the ground plane for various values of S/D using a finite-element method. In this analysis, the two-dimensional Navier-Stokes equation was formulated on stream function ψ and vorticity ω by the Galerkin method. The value of stream function at each time was calculated using a sub-implicit scheme. As a result, it was found that the results of the numerical analysis were close to those of the flow visualization using a water channel, and that this analysis was adequate to investigate the flow over rows of two-dimensional ribs on the ground plane. It was also confirmed that stable vortices were existent in the grooves for S/D≦5 and the vortices were unstable behind the ribs for S/D≧7.
一般社団法人日本機械学会の論文
1994-03-25