領域分割法を用いたスペクトル差分法による数値解析(流体工学,流体機械)

概要

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A spectral finite difference method with domain decomposition is used to solve the Navier-Stokes equation for incompressible fluids. In the domain decomposition method, some subgrids consisting of multiple orthogonal curvilinear coordinate systems and of overlapping region (s) are adopted, and one-dimensional interpolation is applied to the overlapping region in the case of two-dimensional analysis to obtain neighboring values corresponding to a virtual boundary. Mass conservation on a virtual boundary is assured using a mass imbalance correction. Present numerical analyses for two-dimensional, internal, doubly-connected or triply-connected flow fields consisting of cylindric and elliptic boundaries show good consistency, accuracy and efficiency.
社団法人日本機械学会の論文
1997-07-25