摘要
蛇形流场中的流动表现为复杂的各向异性紊流。标准的双方程k -ε紊流模型由于其各向同性的假定 ,在蛇形流场的紊流数值模拟中其纵向平均流速计算结果与实测值有较大偏差。本文采用代数应力紊流模型模拟蛇形流场中的各向异性紊动应力 ,计算出了蛇状水箱内的分离流动情况 ,其纵向平均流速的计算值比k -ε模型更合理 。
Turbulent flow in a baffled serpentine channel is complicated and non\|isotropic, and the use of a standard isotropic k ε model in the simulation of such a flow does not achieve satisfactory accuracy. This paper presents simulation results of flows in a baffled serpentine channel by using an algebraic stress model, which can include the non isotropic effect. Numerical predictions using this model were tested against measurements from a physical model study.\;
出处
《水力发电学报》
EI
CSCD
北大核心
2001年第4期76-84,共9页
Journal of Hydroelectric Engineering
基金
国家自然科学基金资助 (批准号 598790 0 9)
关键词
数值模拟
代数应力模型
紊流应力
蛇形流场
Numerical simulation\ \ Algebraic stress model\ \ Turbulent stress
