Shock capturing using interpolatory wavelets

C. Cunha, S. Gomes
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Abstract

In this paper we discuss an adaptive method for the computation of discontinuous solutions of hyperbolic conservation laws. In each time level we use techniques coming from interpolatory multiresolution analyses for detecting discontinuities of the solution. The adaptive scheme uses first order upwind flux computation in the immediate neighbourhood of these irregularities. Since the differential equation holds in the smoothness domain, we follow the characteristics in the time marching procedure at grid points in that domain.
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利用插值小波捕捉冲击
本文讨论了双曲型守恒律不连续解的一种自适应计算方法。在每个时间水平上,我们使用来自插值多分辨率分析的技术来检测解决方案的不连续性。自适应方案采用一阶迎风通量计算这些不规则区域的邻域。由于微分方程在光滑域内成立,因此我们遵循该域内网格点的时间推进过程中的特征。
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