Two-point closure strategy in the mapping closure approximation approach.

Two-point closure strategy in the mapping closure approximation approach.
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DOI：
10.1103/physreve.70.036309
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发表时间：
2004-09
期刊：
Physical review. E, Statistical, nonlinear, and soft matter physics
影响因子：
--
通讯作者：
G. He;Zi-Fan Zhang
G. He;Zi-Fan Zhang
中科院分区：
其他
文献类型：
--
作者：
G. He;Zi-Fan Zhang

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针对随机速度场对标量平流的概率密度函数的演化，提出了映射闭包近似（MCA）方法中的两点闭包策略。MCA方法基于多点统计。我们使用一点pdf和两点关联来建立一个MCA模型系统。MCA模型既可以描述PDF形状的演变，也可以描述PDF演变的速度。
A two-point closure strategy in mapping closure approximation (MCA) approach is developed for the evolution of the probability density function (PDF) of a scalar advected by stochastic velocity fields. The MCA approach is based on multipoint statistics. We formulate a MCA modeled system using the one-point PDFs and two-point correlations. The MCA models can describe both the evolution of the PDF shape and the rate at which the PDF evolves.