| 条件滤波大涡模拟方程封闭模型检验 |
| |
| 引用本文： | 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(2):357-359. |
| |
| 作者姓名： | 张健 张星 姚华栋 |
| |
| 作者单位： | 中国科学院力学研究所非线性力学国家重点实验室; |
| |
| 基金项目： | 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) |
| |
| 摘 要： | 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,...
|
| 关 键 词： | 条件滤波 大涡模拟 湍流 化学反应流 |
EXAMINATIONS ON CLOSURE MODELS OF CONDITIONALLY FILTERED LES |
| |
| ZHANG Jian ZHANG Xing YAO Hua-Dong.EXAMINATIONS ON CLOSURE MODELS OF CONDITIONALLY FILTERED LES[J].Journal of Engineering Thermophysics,2011(2):357-359. |
| |
| Authors: | ZHANG Jian ZHANG Xing YAO Hua-Dong |
| |
| Institution: | ZHANG Jian ZHANG Xing YAO Hua-Dong (LNM,Institute of Mechanics,Chinese Academy of Sciences,Beijing 100190,China) |
| |
| Abstract: | The 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 th... |
| |
| Keywords: | conditionally filtered LES turbulence chemical reacting flow |
| 本文献已被 CNKI 等数据库收录！ |
