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arXiv 1505.04089math.NAcs.NAphysics.comp-ph
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显式和隐式动能流体迎风皮尔加林方法用于双曲偏微分方程

Explicit and Implicit Kinetic Streamlined-Upwind Petrov Galerkin Method for Hyperbolic Partial Differential Equations

Indian Institute of Science(印度科学研究所)

Ameya Dilip Jagtap, S. V. Raghurama Rao

AI总结:

本文提出了一种显式和隐式动能流体迎风皮尔加林方法,用于求解双曲方程,如Burgers方程和可压缩欧拉方程,在多维情况下优于原始SUPG稳定方法,并通过数值实验验证了该方法的数值精度。

摘要:

本文提出了一种新的显式和隐式动能流体迎风皮尔加林(KSUPG)方案,用于求解双曲方程,如Burgers方程和可压缩欧拉方程。所提出的方案在多维情况下优于原始SUPG稳定方法。为了验证该方案的数值精度,进行了各种数值实验,针对1D和2D Burgers方程以及1D和2D欧拉方程使用Q4和T3元素进行测试。此外,对显式2D形式进行了频谱稳定性分析。最后,比较了KSUPG方案的显式和隐式版本。

英文摘要:

A novel explicit and implicit Kinetic Streamlined-Upwind Petrov Galerkin (KSUPG) scheme is presented for hyperbolic equations such as Burgers equation and compressible Euler equations. The proposed scheme performs better than the original SUPG stabilized method in multi-dimensions. To demonstrate the numerical accuracy of the scheme, various numerical experiments have been carried out for 1D and 2D Burgers equation as well as for 1D and 2D Euler equations using Q4 and T3 elements. Furthermore, spectral stability analysis is done for the explicit 2D formulation. Finally, a comparison is made between explicit and implicit versions of the KSUPG scheme.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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