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Efficient iterative algorithms for the stochastic finite element method with application to acoustic scattering

机译:随机有限元方法的有效迭代算法及其在声散射中的应用

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In this study, we describe the algebraic computations required to implement the stochastic finite element method for solving problems in which uncertainty is restricted to right-hand side data coming from forcing functions or boundary conditions. We show that the solution can be represented in a compact outer product form which leads to efficiencies in both work and storage, and we demonstrate that block iterative methods for algebraic systems with multiple right-hand sides can be used to advantage to compute this solution. We also show how to generate a variety of statistical quantities from the computed solution. Finally, we examine the behavior of these statistical quantities in one setting derived from a model of acoustic scattering.
机译:在这项研究中,我们描述了实现随机有限元方法以解决不确定性仅限于来自强制函数或边界条件的右侧数据的问题所需的代数计算。我们证明了解决方案可以以紧凑的外部产品形式表示,从而提高了工作效率和存储效率,并且我们证明了具有多个右手边的代数系统的块迭代方法可以用于计算该解决方案。我们还将展示如何从计算出的解决方案中生成各种统计量。最后,我们在从声散射模型得出的一种设置中检查这些统计量的行为。

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