首页 | 本学科首页   官方微博 | 高级检索  
     检索      

一种可应用于旋流计算的非线性代数应力模型
引用本文:刘会猛,刘永长,曹立,邓迎寒.一种可应用于旋流计算的非线性代数应力模型[J].华中科技大学学报(自然科学版),2002,30(3):55-57.
作者姓名:刘会猛  刘永长  曹立  邓迎寒
作者单位:华中科技大学能源与动力工程学院,430074
基金项目:国家自然科学基金资助项目 (5 9876 0 15 )
摘    要:从Rodi提出的代数应力模型出发,根据张量不变性函数理论,导出雷诺应力与平均速度梯度之间较通用的,含有速度梯度二次导项的模型公式。该模型保所需系数与ASM中的系数常数完全相同。非线性本构方程为显式关系式,在体现了非线性关系的同时,又避免了求解应力的代数方程组难于收敛的困难。

关 键 词:计算  旋流  湍流  非线性代数应力模型  张量不变性函数理论  雷诺应力  平均速度梯度  内燃机
文章编号:1671-4512(2002)03-0055-03
修稿时间:2001年12月26

A new non-linear algebraic stress model for modeling swirling flow
Liu Huimeng Liu Yongchang Cao Li Deng Yinghan Doctoral candidate., College of Energy & Power Eng.,Huazhong Univ. of Sci. & Tech.,Wuhan ,China..A new non-linear algebraic stress model for modeling swirling flow[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2002,30(3):55-57.
Authors:Liu Huimeng Liu Yongchang Cao Li Deng Yinghan Doctoral candidate  College of Energy & Power Eng  Huazhong Univ of Sci & Tech  Wuhan  China
Institution:Liu Huimeng Liu Yongchang Cao Li Deng Yinghan Doctoral candidate., College of Energy & Power Eng.,Huazhong Univ. of Sci. & Tech.,Wuhan 430074,China.
Abstract:On the basis of algebraic stress model proposed by Rodi, a universal non linear constitutive relation between the Reynolds stress and the mean velocity gradients which include the second order terms is formulated by applying tensor invariance theory in this paper. The coefficients in this model remain the same as that in ASM model. The explicit constitutive relation not only reflects non linear relation, but also ensures the convergence in solving the algebraic stress equation sets.
Keywords:swirling flow  turbulence flow  non  linear algebraic stress model
本文献已被 CNKI 维普 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号