非均相流模型在绕回转体通气空化流动计算中的应用  

APPLICATION OF INHOMOGENEOUS MODEL TO COMPUTATIONS OF VENTILATED CAVITATING FLOWS AROUND AN AXISYMMETRIC BODY

作　　者：王复峰[1,2] 王国玉[1] 尤天庆 黄彪[1] 郭百森 

机构地区：[1]北京理工大学机械与车辆学院,北京100081 [2]装备学院昌平士官学校,北京102249 [3]北京宇航系统工程研究所,北京100076

出　　处：《工程力学》2016年第1期18-24,共7页Engineering Mechanics

基　　金：国家自然科学基金青年科学基金项目(51209004)

摘　　要：结合水洞实验,研究了非均相流模型在通气空化流场计算中的应用。分别采用均相和非均相流模型对绕带空化器回转体的通气空化流场进行了数值计算,并与实验结果进行了对比,结果表明:非均相流模型由于充分考虑到相间界面及其相互作用,较应用均相流模型,能够更准确地模拟绕带空化器回转体的通气空化流动的空泡形态和通气空化流场的非定常特性和空泡区域的速度分布,更好地捕捉到空化区域内反向射流运动的非定常过程。The application of inhomogeneous model to computations of ventilated cavitating flows are studied based on water tunnel experimentations. The ventilated cavitating flows around an axisymmetric body with a cavitator are numerically computed with the homogeneous and inhomogeneous model respectively, and compared with the experimental results. The results show that compared with homogeneous model, the inhomogeneous model generates accurate simulation of cavity shapes variation, unsteady characteristics and velocity distribution of ventilated cavitating flows around axisymmetric body with a cavitator. The detailed process of the re-entrant jet flow at cavitating region can be captured by the inhomogeneous model due to the consideration of the interaction between the two phases.

关 键 词：非均相流模型 空化器 回转体 通气空化 数值计算 

分 类 号：TV131.32[水利工程—水力学及河流动力学]