摘要
超空泡技术作为水中航行体增速减阻的重要手段已经成为了共识。超空泡航行体作为目前最具有应用前景的水下航行体,对其流体动力变化规律的研究具有重要的意义。基于有限体积方法,结合N-S方程与空化模型,建立了超空泡航行体自由运动的非定常流场求解数值模拟方法。通过对非定常超空泡流场计算结果的分析,对航行体的流体动力进行分解和建模。结合相关理论分析,确定了超空泡航行体流体动力公式。研究表明,尾拍力与空泡壁面形状、航行速度及尾部沾湿面积等密切相关。
Supercavity technology is well known as an increasing speed and reducing drag method of underwater vehicles.It is of great significance to study on the hydrodynamic characteristics of supercavitating vehicle which is the most promising under water vehicle.Based on the finite volume method,combined with the N-S equation and cavitation model,a numerical simulation method for the unsteady supercavitating flow field of vehicle is established.Based on the theoretical analysis,the hydrodynamic force of the vehicle is analysed and modeled.The hydrodynamic force is closely related to the shape of cavity which depends on the navigation speed and the wetted area of the tail.
作者
李杰
祝许皓
LI Jie;ZHU Xuhao(School of Naval Architecture,Ocean and Civil Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;MOE Key Laboratory of Hydrodynamics,Shanghai Jiao Tong University,Shanghai 200240,China)
出处
《宇航总体技术》
2020年第3期22-27,共6页
Astronautical Systems Engineering Technology
基金
国家自然科学基金(11572194).
关键词
超空泡航行体
数值模拟
尾拍力
Supercavitating vehicle
Numerical simulation
Tail-slapping force
