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化学反应流中分子扩散的二点封闭MCA模型
Alternative TitleA mac model for molecular diffusion in turbulent reactive flows
张子范; 何国威
Source Publication力学学报
2004-03-19
Volume36Issue:2Pages:140-145
Abstract在化学反应流的概率密度函数(PDF)方法中,对流项和化学反应项都是封闭的,但分子扩散项必须模拟.现有的分子扩散模型都是唯象的,需要引入外加参数,并难以通过一些基本物理过程的检验.本文发展了随机映射逼近(mapping closure approximation,MCA)方法,解析地从控制方程导出一个封闭的分子扩散模型.该方法考虑两点联合概率密度函数方程,引入空间特征尺度,因此解决了以往映射封闭方法中分子扩散速率无法确定的问题.数值模拟表明该方法能用于预测标量扩散的速度,以及概率密度函数和条件平均扩散等统计量.
Keyword分子扩散
Indexed ByCSCD
Language中文
Funding Organization国家重点基础研究发展规划(G1999032801,G2000077305) ; 国家杰出青年科学基金(10325211)~~
CSCD IDCSCD:1643145
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/41662
Collection力学所知识产出(1956-2008)
Corresponding Author张子范
Recommended Citation
GB/T 7714
张子范,何国威. 化学反应流中分子扩散的二点封闭MCA模型[J]. 力学学报,2004,36(2):140-145.
APA 张子范,&何国威.(2004).化学反应流中分子扩散的二点封闭MCA模型.力学学报,36(2),140-145.
MLA 张子范,et al."化学反应流中分子扩散的二点封闭MCA模型".力学学报 36.2(2004):140-145.
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