著者

西村 智行 持丸 義弘

出版者

一般社団法人日本機械学会

雑誌

日本機械学會論文集. B編 (ISSN:03875016)

巻号頁・発行日

vol.63, no.611, pp.2309-2315, 1997-07-25

被引用文献数

1 1

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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.