基于均质多相流的超空泡航行体尾部升力数值模拟

为了解影响超空泡航行体尾部升力特性的主要因素,为超空泡航行体的弹道稳定性和控制的有效性提供一些参考,基于均质多相流理论对水洞试验前支撑模型进行了气-液两相三维数值模拟。结果发现采用均质多相流模型可以定性模拟出航行体尾部升力特性;采用SST湍流模型比标准k-ε湍流模型效果更好;航行体攻角和来流速度都是影响航行体尾部升力的重要因素。

Numerical simulation on lift of aft section of supercavitating bodies based on homogeneous multiphase model

In order to understand the main factors influencing the lift characteristic of aft section of underwater supercavitating bodies and to provide some reference information for the stability of trajectory as well as the validity of control, three-dimensional gas-liquid numerical simulations based on homogeneous multiphase model have been carried out for a fore supported model, which was tested in a water tunnel. It is found that the lift characteristic of aft section of supercavitating bodies can be simulated qualitatively by using the homogeneous multiphase model, using SST turbulence model is better than k - ε model and the attack angle of the body and the inflow velocity are important factors that influencing the lift of aft body.