A Multistage Wiener Chaos Expansion Method for Stochastic Advection-Diffusion-Reaction Equations
A Multistage Wiener Chaos Expansion Method for Stochastic Advection-Diffusion-Reaction Equations
复制标题
随机平流扩散反应方程的多级维纳混沌展开法
DOI:
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发表时间:
2012
影响因子:
3.1
通讯作者:
G. Karniadakis
中科院分区:
文献类型:
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作者:
Zhongqiang Zhang;B. Rozovskii;M. Tretyakov;G. Karniadakis
Using Wiener chaos expansion (WCE), we develop numerical algorithms for solving second-order linear parabolic stochastic partial differential equations (SPDEs). We propose a deterministic WCE-based algorithm for computing moments of the SPDE solutions without any use of the Monte Carlo technique. We also compare the proposed deterministic algorithm with two other numerical methods based on the Monte Carlo technique and demonstrate that the new method is more efficient for highly accurate solutions. Numerical tests verify that the scheme is of mean-square order $O( \frac{\Delta^{N/2}}{\sqrt{(N+1)!}})$ for diffusion and for diffusion-reaction SPDEs with constant or variable coefficients, where $\Delta$ is the time step, and $N$ is the Wiener chaos order.
DOI:
10.1090/s0025-5718-09-02250-9
发表时间:
2009-03
期刊:
Math. Comput.
影响因子:
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作者:
G. Milstein;M. Tretyakov
通讯作者:
G. Milstein;M. Tretyakov