摘要
基于有限体积法,采用两流体多相流模型和SST(Shear Stress Transport)湍流模型,建立了用于求解超空泡航行体转弯运动过程中的三维数值模型,研究了转弯运动条件下通气空泡的形态特征及超空泡航行体的流体动力特性。计算结果表明:在转弯运动过程中空泡产生弯曲变形,空泡轴线与航行体运动轨道基本重合;由于空泡的弯曲变形航行体两侧表面呈现非对称沾湿,利用空化器横向偏转能够避免沾湿区的出现,而且对航行体水平面流体动力有良好的控制作用。
To understand the hydrodynamic characteristics of supercavitating vehicle in the turning motion,a three dimensional numerical model is presented based on finite volume method,by using the two-fluid multiphase flow model and SST(Shear Stress Transport) for solving ventilated cavitating flow at the turning motion.Supercavity shape and hydrodynamic characteristics of its vehicle in the turning motion are investigated.The numerical results obtained show that cavity occurs bending deformation in the process of turning motion,the cavity axis and motion trajectory coincide with each other.There are asymmetric wetted zones on both sides of supercavitating vehicle,but the wetted zone can be avoided by using cavitator orientation effect.The deflection of cavitator in the lateral direction has a good control effect on the hydrodynamics of its vehicles.
出处
《应用力学学报》
CAS
CSCD
北大核心
2012年第3期278-283,353,共6页
Chinese Journal of Applied Mechanics
基金
国家自然科学基金重点项目(10832007)
关键词
流体力学
超空泡航行体
转弯运动
数值模拟
hydrodynamics,supercavitating vehicle,turning motion,numerical simulation
