C314 多孔質物体周りの流れのLESによる数値計算(C-31 混相流・機能性流体(1),一般講演)

概要

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There are not very many practical applications for flow prediction in and around porous objects such as radiators, filters and fences. Reproduction of the configuration of solid obstacles in the mesh discretization is a direct way. However, this increases the computational load and can cost a lot of time and money. In order to reduce these factors, we introduced a space averaging operation to the Navier-Stokes equations and derived filtered equations for the Large Eddy Simulation. The filtering was done in a space containing solid obstacles. Consequently the configuration of the obstacles does not need to be reproduced any further. We can calculate the space-averaged property of flows with coarse meshes and a reduced computational load. In this paper, we present some examples of flow calculations around a mesh block consisting of prisms. The performance and effectiveness of the calculation method presented here will be discussed by comparing with the wind tunnel experiments.
日本流体力学会の論文
2004-08-09