采用不同湍流模型计算贯流风机内流场的比较分析

摘要

A two-dimensional model of the cross flow fan is established in this paper,using four different turbulence models (RNG k-ε,RSM,DES,LES)for unsteady calculation,through comparsion of transient velocity distribution and transient vorticity distribution in inner flow field and time-average velocity distribution,time-average pressure distribution along an outer circumference to determine the differences of inner flow field with different turbulence models,it provides reference for numerical simulation of inner flow field of the cross flow fan.%以二维贯流风机模型为研究对象,采用4种不同的湍流模型(RNG k-ε,RSM,DES,LES)进行非稳态计算,通过比较内流场瞬态速度和瞬态涡量分布以及沿叶轮外圆周的时间平均速度和时间平均总压分布,确定了不同湍流模型对内流场计算的差异,为数值模拟研究贯流风机内流场提供参考.