NUMERICAL ANALYSIS METHOD FOR FLOWING FIELD WITH MOVING OBJECT

摘要

PURPOSE:To suppress the increment of calculation volume due to the movement of an object such as the analysis of aerodynaic characteristics formed around a traveling vehicle to its minimum by obtaining the mesh cell number of the other mesh to which a connection border node of one mesh system belongs from a mesh cell to which the border node concerned belongs in the preceding calculation step and its adjacent mesh cells and exchanging the information of a flow field on the border node. CONSTITUTION:In step 1, calculation parameters such as the moving speed of a circular cylinder, a calculation time and the number of calculation steps are inputted, and in step 2, the node coordinates and element data of meshes around the cylinder and the meshes of the whole flow field are inputted. In step 3, a table for referring the mesh numbers of adjacent meshes from respective inputted mesh data is formed. At new time, the mesh cell number of the other mesh to which the connection border node of one mesh belongs is retrieved based upon the mesh cell to which the border node belongs in the preceding calculation step and its adjacent mesh cells.