随机参数多尺度动力学方程双保真方法的误差估计
Error estimate of a bi-fidelity method for kinetic equations with random parameters and multiple scales
摘要:
本文对多尺度动力学方程的双保真度方法进行了一致误差估计。我们把玻尔兹曼和线性输运方程作为重要的例子。主要的分析工具是动力学方程的hypoverravity分析,考虑在一个微扰设置接近全球平衡的解决方案。这使我们能够获得动力学和流体动力学状态下的误差估计。
英文摘要:
In this paper, we conduct uniform error estimates of the bi-fidelity method for multi-scale kinetic equations. We take the Boltzmann and the linear transport equations as important examples. The main analytic tool is the hypocoercivity analysis for kinetic equations, considering solutions in a perturbative setting close to the global equilibrium. This allows us to obtain the error estimates in both kinetic and hydrodynamic regimes.
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