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条件滤波大涡模拟方程封闭模型检验
Alternative TitleEXAMINATIONS ON CLOSURE MODELS OF CONDITIONALLY FILTERED LES
张健; 张星; 姚华栋
Source Publication工程热物理学报
2011-02-15
Volume32Issue:2Pages:357-359
ISSN0253-231X
Abstract使用直接数值模拟和条件滤波大涡模拟相结合的方法检验了线性扩散假设和一阶近似在条件滤波大涡模拟中的应用. 线性扩散假设用于封闭条件滤波大涡模拟方程中的混合分数空间输运项, 一阶近似用于封闭条件滤波大涡模拟方程中的条件滤波化学反应源项. 通过使用条件滤波大涡模拟计算出的反应物大尺度量的一阶、二阶统计矩与直接数值模拟结果符合很好, 验证了这些近似的合理性, 为进一步发展条件滤波大涡模拟方法奠定了基础
Other AbstractThe DNS and the conditionally filtered LES(CFLES) were combined to examine the validity of the linear-diffusion approximation and the first-order closure in CFLES equation.The linear-diffusion approximation was applied to closing transport term in mixture-fraction space in CFLES equation,and the first-order closure was used in closing conditionally filtered reaction source term.The first two order moments of filtered mass-fraction of the reactant were obtained by using CFLES and were closed to results of the DNS,which well examined the validity of the approximations mentioned above. 更多
Keyword条件滤波 大涡模拟 湍流 化学反应流
Subject Area力学
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Indexed ByEI ; CSCD
Language中文
Funding Organization国家自然科学基金资助项目(No.50906096;No.10732090;No.50890182);973资助项目子课题(No.2009CB724103;No.2007CB814803)
CSCD IDCSCD:4125219
DepartmentLNM湍流
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/44980
Collection非线性力学国家重点实验室
Corresponding Author张健
Recommended Citation
GB/T 7714
张健,张星,姚华栋. 条件滤波大涡模拟方程封闭模型检验[J]. 工程热物理学报,2011,32(2):357-359.
APA 张健,张星,&姚华栋.(2011).条件滤波大涡模拟方程封闭模型检验.工程热物理学报,32(2),357-359.
MLA 张健,et al."条件滤波大涡模拟方程封闭模型检验".工程热物理学报 32.2(2011):357-359.
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