液氮绕水翼低温空化流数值模拟(英文)  

Simulation of Liquid Nitrogen around Hydrofoil Cavitation Flow

作　　者：马相孚[1] 魏英杰[1] 王聪[1] 黄文虎[1] 

机构地区：[1]哈尔滨工业大学航天学院,哈尔滨150001

出　　处：《船舶力学》2012年第12期1345-1352,共8页Journal of Ship Mechanics

摘　　要：为研究低温空化流场特性,考虑液氮的热力学参数和空化时两相间的能量交换,利用数值模拟方法对液氮绕水翼低温空化特性进行了分析。基于均质多相流模型,采用Zwart空化模型对液氮绕水翼低温空化流进行稳态计算,修正了Zwart空化模型中蒸发和冷凝系数,给出了水翼表面压力、温度及空化强度的分布。数值结果同采用Schneer-Sauer空化模型计算的结果进行了比较。水翼表面压力和温度的数值结果与Hord实验数据吻合较好,验证了数值模拟的有效性。To study the cryogenic cavitation flow characteristics, the thermodynamic parameters of liquid nitrogen and energy interactions between two phases when cavitation occurs are considered, and the liquid nitrogen around hydrofoil cryogenic cavitation flow characteristics is analyzed by nu- merical simulation. Based on homogeneous flow model and Zwart cavitation model, hydrofoil cryo- genic cavitation in liquid nitrogen is calculated steady.The evaporation and condensation coefficients of Zwart cavitation model are updated, the hydrofoil surface pressure, temperature and distribution of cavitation intensity are given.Numerical results are compared with the results obtained by the Schneer-Sauer cavitation model.Numerical results are consistent with Hord experimental data to ver- ify the validity of the numerical simulation.

关 键 词：空化 液氮 热力学效应 水翼 数值模拟 

分 类 号：O359[理学—流体力学]