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Mesh motion strategy is one of the key points in many fluid-structure interaction problems. One popular technique used to solve this problem is known as the spring analogy method. In this paper a new mesh update approach based on the spring analogy method is presented for the effective treatment of mesh moving boundary problems. The proposed mesh update technique is developed to avoid the generation of squashed invalid elements and maintain mesh quality by considering each element shape and grid scale to th... 相似文献
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Novel mesh technique and its application in the wind field simulation for flexible spatial structure
In this paper, novel mesh techniques are proposed for wind field simulation of flexible spatial structure. For mesh generation,
an interpolation strategy is presented to obtain a mesh system with variable density. Two spatial structure examples are used
to examine the efficiency and applicability of this technique. Then based on the structured mesh system generated by the technique,
the mesh nodal coordinates are updated to adapt the moving boundary conditions by means of the mapping interpolation functions
and some examples are given to verify the effectiveness. Furthermore, the constrained counterforce distribution technique
and projection interpolation strategy are developed to implement the data exchange on the interaction surface of wind and
structure. Finally, the computational accuracy is numerically validated. 相似文献
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