A High-Order Moving Mesh Kinetic Scheme Based on WENO Reconstruction for Compressible Flows on Unstructured Meshes

A High-Order Moving Mesh Kinetic Scheme Based on WENO Reconstruction for Compressible Flows on Unstructured Meshes
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非结构网格可压缩流基于WENO重构的高阶移动网格动力学方案

DOI:
10.1007/s10915-013-9705-0
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发表时间:
2013-11
影响因子:
2.5
通讯作者:
Xihua Xu, Guoxi Ni, Song Jiang
Xihua Xu, Guoxi Ni, Song Jiang
中科院分区:
数学2区
文献类型:
--
作者:
Xihua Xu, Guoxi Ni, Song Jiang

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本文提出了一种适用于非结构化网格可压缩流动计算的高阶运动网格(HMM)动力学格式。为了构造该方案,我们采用无重映射的ale型动力学方法框架(Ni et al. in J computer Phys 228:3154-3171, 2009)得到可压缩系统的离散化。在空间精度方面,我们采用加权本质非振荡重构的自适应运动网格(SIAM J num Anal 41:48 87 - 515 2003)来实现时间精度,利用包含时间精度积分的运动通量,从而得到HMM格式。给出了一些数值算例,特别是一个等熵涡旋问题,说明了该格式的收敛顺序。数值结果证明了该方法的准确性和鲁棒性。
In this paper, we present a high-order moving mesh (HMM) kinetic scheme for compressible flow computations on unstructured meshes. To construct the scheme, we employ the frame of the remapping-free ALE-type kinetic method (Ni et al. in J Comput Phys 228:3154–3171, 2009) to get the discretization of compressible system. For the space accuracy, we use the weighted essential non-oscillatory reconstruction on the adaptive moving mesh from Tang and Tang (SIAM J Numer Anal 41:487–515 2003) to achieve time accuracy,we make use of the kinetic flux which includes time accurate integral, and thus obtain a HMM scheme. A number of numerical examples are given, especially an isentropic vortex problem to show the convergence order of the scheme. Numerical results demonstrate the accuracy and robustness of the scheme.
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发表时间: 2005-09
影响因子: 4.1
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