ボリュームデータを用いた流体解析システムの可能性(<小特集>ボリュームデータ,ボクセルデータなどに基づくものつくり支援システム)  [in Japanese] Potential of CFD System Based on Volume Data(<Special Feature>Computer Aided Design and Production System Based on Voxel or Volume Data Structure)  [in Japanese]

An urgent problem of Computational Fluid Dynamics (CFD) system from the viewpoint of users is a treatment of complex geometries that we must face in the real world It is also recognized that care for the operation of CFD system for actual design process of products is an underlying issue To overcome these issues, a newly Cartesian based CFD system, which combines volume data, was proposed The combination between shape expression by implicit function, an octree data structure and several kinds of shape capturing schemes provides the flexibility of the shape approximation for users Thus, the users will be able to control the balance of prediction accuracy and computation time In addition, a class library of C++, which has a unified user-interface, is constructed for the solver development in order to increase userfnendhness and efficiency of the solver development