Efficient numerical calculation of drift and diffusion coefficients in the diffusion approximation of kinetic equations
Efficient numerical calculation of drift and diffusion coefficients in the diffusion approximation of kinetic equations
复制标题
动力学方程扩散近似中漂移和扩散系数的高效数值计算
DOI:
10.1093/imanum/drv066
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发表时间:
2016
影响因子:
2.1
通讯作者:
Bonnaillie-Noël V
中科院分区:
文献类型:
--
作者:
Bonnaillie-Noël V
In this paper we study the diffusion approximation of a swarming model given by a system of interacting Langevin equations with nonlinear friction. The diffusion approximation requires the calculation of the drift and diffusion coefficients that are given as averages of solutions to appropriate Poisson equations. We present a new numerical method for computing these coefficients that is based on the calculation of the eigenvalues and eigenfunctions of a Schrödinger operator. These theoretical results are supported by numerical simulations showcasing the efficiency of the method.
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DOI:
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发表时间:
1998
期刊:
影响因子:
--
作者:
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通讯作者:
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DOI:
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2006
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Journal de Mathématiques Pures et Appliquées
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Multiscale Model. Simul.
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通讯作者:
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1979
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