摘要
分析零航速减摇鳍的升力模型和力矩模型,探讨正弦运动的鳍产生最大升力和最大转鳍力矩与转鳍速度的关系,经对比发现,同一鳍角幅值转鳍下任一时刻升力的大小与经过该点的角速度的平方成正比。为此,采用通用CFD软件计算方法,验证理论模型的规律,在数值仿真的基础上,拟合升力公式和力矩公式的各个系数,并将实船试验转鳍力矩与仿真结果进行对比,结果表明仿真结果能较好地反映实际转鳍力矩的变化规律。
The article analyses the hydrodynamic model and the torque model of the fin stabilizer at zero speed, and discusses the relationship between the rotation velocity and the max hydrodynamic force the max rotation torque generated by the fin in the sine movement. The comparison shows that the hydrodynamic force is proportional to the square of the rotation velocity at any moment under the same angle amplitude. By the calculation of CFD method, the law of the theoretical model is verified. Based on the simulation, the coefficients of the matching hydrodynamic force formula and the torque formula are obtained. The real-ship experimental result and the simulation result are compared, which shows the simulation result can well reflect the changing law of the real rotation torque..
出处
《船舶工程》
CSCD
北大核心
2017年第9期11-14,30,共5页
Ship Engineering
关键词
减摇鳍
零航速
水动力特性
fin stabilizer
zero speed
hydrodynamic characteristics
