ロバスト性向上を目指した楕円型緩和方程式応力モデルの改良について(乱流の予測とモデリング(2),一般講演)

概要

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The present study considers a modification to the elliptic relaxation method to reduce the numerical stiffness induced by the boundary conditions on the wall. The proposed model based on Durbin's elliptic relaxation method alternatively solves the transport equations for the ratios of Reynolds stresses to turbulent kinetic energy, instead of equations for Reynolds stresses. It is supposed that the boundary conditions of the new elliptic relaxation equations derived in this way will reduce the stiffness of the near-wall problem. The application of the present model is made to computation of a plane channel flow at a Reynolds number of 395 based on the friction velocity. Reasonable results are derived although further improvement is necessary.
日本流体力学会の論文
2010-09-09