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首页> 外文期刊>Applied mathematics and computation >A high-order compact finite difference scheme and precise integration method based on modified Hopf-Cole transformation for numerical simulation of n-dimensional Burgers' system
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A high-order compact finite difference scheme and precise integration method based on modified Hopf-Cole transformation for numerical simulation of n-dimensional Burgers' system

机译:基于改进的Hopf-COLE转换的高阶紧凑的有限差分方案和精确集成方法,用于N立维汉堡系统数值模拟

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摘要

This paper modifies a n-dimensional Hopf-Cole transformation to the n-dimensional Burgers' system. We obtain the n-dimensional heat conduction equation through the modification of the Hopf-Cole transformation. Then the fourth-order precise integration method (PIM) in combination with a spatially global sixth-order compact finite difference (CFD) scheme is presented to solve the equation with high accuracy. Moreover, coupling with the Strang splitting method, the scheme is extended to multi-dimensional (two, three-dimensional) Burgers' system. Numerical results show that the proposed method appreciably improves the computational accuracy compared with the existing numerical method. Moreover, the two-dimensional and three-dimensional examples demonstrate excellent adaptability, and the numerical simulation results also have very high accuracy in medium Reynolds numbers. (C) 2019 Elsevier Inc. All rights reserved.
机译:本文将N维HOPF-COLE转换改变为N维汉堡系统。 我们通过跳跃-CORE转化的改变获得N维导热方程。 然后,提出了第四阶精确集成方法(PIM)与空间全球第六阶的有限有限差(CFD)方案进行了组合,以求解高精度的等式。 此外,与突出分裂方法耦合,该方案延伸到多维(二维)汉堡系统。 数值结果表明,与现有数值方法相比,该方法明显提高了计算准确性。 此外,二维和三维示例展示了优异的适应性,数值模拟结果在媒体雷诺数中具有非常高的精度。 (c)2019 Elsevier Inc.保留所有权利。

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