arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2002.01962math.AP
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Euler方程自相似解的后验误差估计

A Posteriori Error Estimates for Self-Similar Solutions to the Euler Equations

Alberto Bressan, Wen Shen

摘要:

本文的主要目标是分析一族“尽可能简单”的初始数据,如数值模拟所示,不可压缩欧拉方程有多个解。我们在这里采取的第一步,这些数值结果的严格验证。也就是说,我们考虑的方程组对应于一个自相似的解决方案,限制在一个有界区域的光滑边界。通过有限维Galerkin方法得到一个近似解,建立了具有相同边界条件的数值逼近与精确解之间距离的后验误差界.

英文摘要:

The main goal of this paper is to analyze a family of "simplest possible" initial data for which, as shown by numerical simulations, the incompressible Euler equations have multiple solutions. We take here a first step toward a rigorous validation of these numerical results. Namely, we consider the system of equations corresponding to a self-similar solution, restricted to a bounded domain with smooth boundary. Given an approximate solution obtained via a finite dimensional Galerkin method, we establish a posteriori error bounds on the distance between the numerical approximation and the exact solution having the same boundary data.

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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