1708 移動境界問題に対する格子の発生および消滅を伴う非構造格子法(G05-2 数値解析,G05 流体工学)

概要

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In a case of treating complicated moving-boundary problems, movement and deformation of grid should conduct flexibly. Especially, using an unstructured grid system, it is relatively easy to divide and merge elements when time step advances. Then, in this paper, the method is able to change the number of elements according to a motion of a boundary under a condition of geometric conservation law. The point of the method is bow to deal with normal vector of control volume surface. In this paper, a procedure of dividing and merging elements are shown, especially, in the case of merging which a few elements joins to one elements. And some estimations for normal vectors of fluxes of each control-volume are formulated.
一般社団法人日本機械学会の論文
2007-09-07