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重畳格子の概念を用いた非構造移動はめ込み型格子法(流体工学,流体機械) 山川, 勝史 松野, 謙一 open access 本文データは学協会の許諾に基づきCiNiiから複製したものである 社団法人日本機械学会 Computational Fluid Dynamics Compressible Flow Unsteady Flow Unstructured Mesh Overset Grid Moving Boundary Problem From a point of view of grid generation, an overset grid generation method is suitable for a flow around moving complicated-shaped body. The overset grid method treats two grid-types which are a main-grid placed on all over the flow field and a sub-grid placed around the body. However it is difficult to satisfy a physical conservation law since the overset grid method interpolates the value between the main-grid and the sub-grid. To assure the conservation law on the overlapped region, we propose a new method that the overset grid method is combined to the unstructured moving grid finite volume method. In this method the sub-grid and the main-grid are joined by the unstructured grid. The feature of the method is that a control volume on which a space-time unified domain is adopted, and the method assures the geometric conservation law too even if the sub-grid moves and deforms. The method is applied to a problem such that complicated-shaped body flies in supersonic flow. 日本機械学会論文集(Ｂ編), 73巻, 734号, pp. 2070-2076, 20071025 Submitted by 附属図書館 KIT-Repository (dspace-admin@jim.kit.ac.jp) on 2010-04-20T03:25:01Z No. of bitstreams: 1 110006419416.pdf: 1047937 bytes, checksum: ea94a7593b0e4402e28f9d13ee0bfaf4 (MD5) Made available in DSpace on 2010-04-20T03:25:01Z (GMT). No. of bitstreams: 1 110006419416.pdf: 1047937 bytes, checksum: ea94a7593b0e4402e28f9d13ee0bfaf4 (MD5) Previous issue date: 2007-10-25 社団法人日本機械学会 2007-10-25 jpn journal article VoR http://hdl.handle.net/10212/2004 https://kit.repo.nii.ac.jp/records/2000473 http://ci.nii.ac.jp/naid/110006419416 日本機械学会論文集(Ｂ編) 73 734 2070 2076 https://kit.repo.nii.ac.jp/record/2000473/files/110006419416.pdf application/pdf 1023.4 KB