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首页> 外文期刊>Computer Methods in Applied Mechanics and Engineering >An adaptive multilevel Monte Carlo algorithm for the stochastic drift-diffusion-Poisson system
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An adaptive multilevel Monte Carlo algorithm for the stochastic drift-diffusion-Poisson system

机译:随机漂移扩散 - 泊松系统的自适应多级蒙特卡罗算法

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摘要

We present an adaptive multilevel Monte Carlo algorithm for solving the stochastic drift-diffusion-Poisson system with non-zero recombination rate. The a-posteriori error is estimated to enable goal-oriented adaptive mesh refinement for the spatial dimensions, while the a-priori error is estimated to guarantee linear convergence of the H-1 error. In the adaptive mesh refinement, efficient estimation of the error indicator gives rise to better error control. For the stochastic dimensions, we use the multilevel Monte Carlo method to solve this system of stochastic partial differential equations. Finally, the advantage of the technique developed here compared to uniform mesh refinement is discussed using a realistic numerical example. (C) 2020 Elsevier B.V. All rights reserved.
机译:我们提出了一种自适应多级Monte Carlo算法,用于求解随零复合率的随机漂移扩散泊松系统。估计A-Bouthiori误差以使空间尺寸实现面向目标的自适应网格细化,而估计A-Priori误差以保证H-1错误的线性会聚。在自适应网格精制中,误差指示符的有效估计会产生更好的错误控制。对于随机尺寸,我们使用多级Monte Carlo方法来解决随机偏微分方程的该系统。最后,使用现实的数值示例讨论了这里开发的技术的优点与均匀网格改进。 (c)2020 Elsevier B.v.保留所有权利。

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