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Symmetry- and essentially-bound-preserving flux-corrected remapping of momentum in staggered ALE hydrodynamics

机译:交错ALE流体动力学中对称且基本保持不变的通量校正动量重映射

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摘要

We present a new flux-corrected approach for remapping of velocity in the framework of staggered arbitrary Lagrangian-Eulerian methods. The main focus of the paper is the definition and preservation of coordinate invariant local bounds for velocity vector and development of momentum remapping method such that the radial symmetry of the radially symmetric flows is preserved when remapping from one equiangular polar mesh to another. The properties of this new method are demonstrated on a set of selected numerical cyclic remapping tests and a full hydrodynamic example.
机译:我们提出了一种新的通量校正方法,用于在交错的任意拉格朗日-欧拉方法的框架内重新映射速度。本文的主要重点是为速度矢量定义和保存坐标不变局部边界,以及发展动量重映射方法,从而在从一个等角极性网格重新映射到另一个等角极网格时,可以保留径向对称流的径向对称性。在一组选定的数值循环重映射测试和完整的流体动力学示例中证明了此新方法的特性。

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