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.
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页数：5
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