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Two mesh deformation methods coupled with a changing-connectivity moving mesh method for CFD applications

机译：两个网格变形方法与CFD应用的变化连接移动网格方法耦合

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Three-dimensional real-life simulations are generally unsteady and involve moving geometries. Industry is currently very far from performing such body-fitted simulations on a daily basis, mainly due to the robustness of the moving mesh algorithm and their extensive computational cost. A moving mesh algorithm coupled to local mesh optimizations has proved its efficiency in dealing with large deformation of the mesh without re-meshing. In this paper, the coupling of this algorithm with two mesh deformation techniques is studied: an elasticity PDE-based one and an explicit Inverse Distance Weighted interpolation one, and both techniques are compared. The efficiency of this method is demonstrated on challenging test cases, involving large body deformations, boundary layers and large displacements with shearing. Finally, the moving mesh algorithm is coupled to a CFD flow solver.
机译：三维实际仿真通常是不稳定的，涉及移动几何形状。行业目前正在每天执行此类身体拟合模拟，主要原因是移动网格算法的稳健性及其广泛的计算成本。耦合到本地网格优化的移动网格算法证明了其在不重新啮合的情况下处理滤网的大变形效率。在本文中，研究了这种算法的耦合与两个网格变形技术：基于弹性PDE的一个和明确的逆距离加权插值，并且两种技术进行了比较。该方法的效率在具有挑战性的测试用例上进行了证明，涉及大体变形，边界层和剪切大型位移。最后，移动网格算法耦合到CFD流动求解器。

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