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A new flux splitting scheme for the Euler equations II: E-AUSMPWAS for all speeds

机译:欧拉方程II的新通量分裂方案:所有速度下的E-AUSMPWAS

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We propose a new scheme called E-AUSMPWAS (E-AUSMPW modified for all speeds) for both cases of low speeds and high speeds. This scheme adopts the Zha-Bilgen splitting procedure and constructs the mass flux as E-AUSMPW. Also, it improves the construction of the pressure flux for low speeds according to theoretical analyses. In terms of the component pu, the E-AUSMPWAS scheme adopts a different method to make it accord with theory better. Series of numerical experiments show that both E-AUSMPWAS and E-AUSMPW are robust against the shock anomaly and the unphysical 'overheating' phenomenon in the receding problem. Also, the E-AUSMPWAS scheme is with a high resolution at both high speeds and low speeds. These properties suggest that the E-AUSMPWAS scheme is promising to be widely used to accurately and efficiently simulate both simple and complex flows at all speeds. (C) 2017 Elsevier B.V. All rights reserved.
机译:对于低速和高速情况,我们提出了一种称为E-AUSMPWAS(针对所有速度修改的E-AUSMPW)的新方案。该方案采用Zha-Bilgen分裂程序,并将质量通量构造为E-AUSMPW。而且,根据理论分析,它改善了低速压力通量的构造。在分量pu方面,E-AUSMPWAS方案采用了不同的方法以使其与理论更好地吻合。一系列的数值实验表明,E-AUSMPWAS和E-AUSMPW都可以很好地抵抗后退问题中的冲击异常和非物理的“过热”现象。而且,E-AUSMPWAS方案在高速和低速下均具有高分辨率。这些特性表明,E-AUSMPWAS方案有望被广泛用于准确高效地模拟各种速度下的简单和复杂流。 (C)2017 Elsevier B.V.保留所有权利。

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