並列タイトル等Use of Spline Functions in CFD
タイトル(掲載誌)航空宇宙技術研究所特別資料 = Special Publication of National Aerospace Laboratory SP-10
一般注記Spline functions are often used for interpolating discrete functions. Here the use of spline functions in various stages of CFD, i.e., grid generation, flow solver, and postprocessing is described. The simplest of the spline functions are cubic splines. With addition of tension, tension splines are defined. Addition of convection produces convection splines. Parametric bi-cubic splines are used to define body surface geometry. Then the grid points on the surface can be shifted arbitrarily along the surface to produce optimum body-surface grid. A scalar linear convection equation is computed using cubic splines. There the energy as well as momentum is conserved. In the postprocessing of the computed flow, it is sometimes necessary to interpolate values at arbitrary spatial locations. There the parametric multi-direction splines are used for interpolation. Multi-direction splines can also be used for streamline-tracing. Coordinate values and velocity vectors are interpolated, and a streamline is traced semi-analytically in the spline space.
資料番号: NALSP0010035
レポート番号: NAL SP-10
一次資料へのリンクURLhttps://jaxa.repo.nii.ac.jp/?action=repository_action_common_download&item_id=43364&item_no=1&attribute_id=31&file_no=1
連携機関・データベース国立情報学研究所 : 学術機関リポジトリデータベース(IRDB)(機関リポジトリ)
提供元機関・データベース宇宙航空研究開発機構 : 宇宙航空研究開発機構リポジトリ