求解复杂湍流的非线性涡黏性系数模型和代数应力模型

NONLINEAR EDDY VISCOSITY AND ALGEBRAIC STRESS MODELS FOR SOLVING COMPLEX TURBULENT FLOWS

非线性涡黏性系数模型和代数应力模型联系了线性涡黏性系数湍流模型和完整的微分雷诺应力模型.随着它们受到日益关注,其形式也越来越多样化.本篇综述的目的是对这些模型加以总结并比较它们之间的共同点及不同之处,指出它们与完整微分雷诺应力模型之间的关系,以及相对于线性涡黏性系数模型而言它们在预报流场上所具有的优势.

Nonlinear eddy viscosity and algebraic stress models are currently providing an invaluable link between the more common linear eddy viscosity turbulence models and the full differential Reynolds stress forms. With the increased popularity has come an abundance of different formulations. The purpose of this review is to provide a cohesive framework for the variety of models proposed and to highlight the various similarities and differences among the models. Their link with differential Reynolds stress models and their improved predictive capability over linear eddy-viscosity models is also highlighted.