翼型对锥形空化器流体动力特性影响分析

Analysis of Influence of Airfoil on Hydrodynamic Characteristics of Conical Cavitator

为分析锥形空化器上翼的流体动力特性,选取Mixture多相流型、Schnerr-Sauer空化模型及标准k-ε湍流模型,对无翼锥型空化器及带有楔形翼、平板翼和流线型翼空化器进行流体仿真,通过仿真软件Fluent,经过数值仿真计算,得到空化器在几种攻角下的稳定空泡形态。从仿真结果来看,空化器的阻力主要集中在锥体部分,增加翼之后空化器阻力增量较小;翼对提升空化器的控制力效果明显,同时又不会影响生成空泡的主要特征数值,总的来说,楔形翼对于提升锥形空化器的控制力效果最为明显。

In order to analyze the hydrodynamic characteristic of upper wing in conical cavitator, Mixture multifluid model, Schnerr-Sauer cavitator model and standard k-εturbulence model were selected to conduct the fluid simulation for the wingless conical cavitator and the cavitator with wedge-shaped wing, flat wing and streamline wing. Through simulation software Fluent, the numerical simulation was used to get stable cavity shapes under several angles of attack. Simulation results show that the resistance of eavitator is mainly concentrated in the cone part, and the resistance of cavitator after increasing the wing is small. The wing has obvious control effect on improving cavitator. Meanwhile, it does not impact the main characteristic value of cavitator. In general, the wedge-shaped wing has obvious control effect on improving conical cavitator.