非圧縮性流体の大移動境界問題に対する移動埋め込み格子法(流体工学,流体機械)

概要

論文の詳細を見る
In this paper, a Moving Embedded-Grid Method is presented for simulation of flows driven by bodies arbitrarily moving in the whole of the flow field. The present "Moving Embedded-Grid Method" is the method such that the embedded grid can move arbitrarily in a main grid covering whole of the flow field. The present method is constructed based on the Moving-Grid Finite-Volume Method with algorithm of dynamically adding and eliminating grid points as well as shifting grid lines. Formulation of the method is presented in detail. First of all, it is confirmed that the present method satisfies the geometric conservation law. Next, the present method has been applied to the flow around a circular cylinder traveling long distance in a stationary fluid and shows good agreement with other reference solution. Applications to flows driven by two square cylinders passing and overtaking each other show the unsteady behavior of the phenomena and the promising feature of the method.
一般社団法人日本機械学会の論文
2008-01-25