arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1807.02306math.APmath.OC
收藏

非线性双曲型偏微分方程熵解的矩方法

A moment approach for entropy solutions to nonlinear hyperbolic PDEs

Swann Marx, Tillmann Weisser, Didier Henrion, Jean Lasserre

摘要:

提出了用凸优化求解多项式双曲偏微分方程的方法。这种方法是基于一个非常弱的概念的解决方案的非线性方程,即测量值(MV)的解决方案,满足一个线性方程的空间中的Borel措施。本文的目的是,第一,提供的条件,确保这两个配方之间的等价性,第二,介绍一种方法,它近似的无穷维线性问题的一个层次的凸,有限维,半定规划问题。这一结果,然后说明了著名的伯格斯方程。我们还比较了我们的结果与现有的数值计划,即Goddom计划。

英文摘要:

We propose to solve polynomial hyperbolic partial differential equations (PDEs) with convex optimization. This approach is based on a very weak notion of solution of the nonlinear equation, namely the measure-valued (mv) solution, satisfying a linear equation in the space of Borel measures. The aim of this paper is, first, to provide the conditions that ensure the equivalence between the two formulations and, second, to introduce a method which approximates the infinite-dimensional linear problem by a hierarchy of convex, finite-dimensional, semidefinite programming problems. This result is then illustrated on the celebrated Burgers equation. We also compare our results with an existing numerical scheme, namely the Godunov 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。

↑