Coarse-grained simulation of chaotic mixing in laminar flows

被引：8

作者：

Vikhansky, A. ^{[1
]}

机构：

[1] Queen Mary Univ London, Dept Engn, London E1 4NS, England

来源：

PHYSICAL REVIEW E | 2006年 / 73卷 / 05期

关键词：

D O I：

10.1103/PhysRevE.73.056707

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

A model for chaotic mixing has been formulated and tested. The advection of a passive scalar by laminar flows with high Peclet numbers is modeled by a finite-volume method on a coarse grid. The scales which are smaller than the increment of the grid are modeled by an approximate subgrid model. The artificial diffusivity of the finite-difference method plays a twofold role. It prevents the formation of spurious oscillations of the solution and also models the transport of the variation of the scalar from the large to subgrid modes.

引用

页数：5

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