構造・流体連成問題のための拘束条件付メッシュアップデート法

概要

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It is quite useful to develop an adaptive mesh updating technique on fluid-structure interaction (FSI) problems. Usage of mesh updating minimizes us to run the processes of mesh generation and projection of nodal values at the interboundary of each time slab. The mesh generation requieres rather significant CPU time and induces projection error of nodal values from previous mesh to current. The relatively small elements which located to neighborhood to the moving boundary, are used to subjected to large displacements and deformation and set in the severe condition. We have developed the adaptive mesh updating technique with the least-squared form of constrained conditions in order to impliment the function of saving the elements from breakdown, overlaping mesh, and maintaining well-conditioned element shape. In the case of collaping tube problems, it could be shown the potential of our method. The present method is entirely general in that it can be applied to structured and unstructured meshes, effectively.
日本シミュレーション学会の論文
1997-03-15