襟翼舵的敞水及桨后水动力性能研究

采用面元法对螺旋桨与襟翼舵相互干扰水动力性能进行计算,两者之间的相互干扰采用迭代处理.计算了敞水中襟翼舵与普通舵的法向力系数,并与试验值进行了比较.敞水计算结果显示,与普通舵相比,襟翼舵的法向力系数有了较大的提高,同时襟翼舵的转舵比对于襟翼舵水动力性能的影响比较大.在敞水襟翼舵的基础上,计算了螺旋桨与襟翼舵相互干扰的水动力性能.与敞水襟翼舵相比,桨后襟翼舵在相同舵角的情况下,法向力系数增大,但增加的幅度不同.还计算了襟翼舵在转舵比为1/4、进速系数为0.5时襟翼舵某剖面在敞水及桨后的表面压力系数分布情况.

Research of the hydrodynamic performance of flap rudder on open water and behind propeller

Panel method was used for the calculation of propeller and flap rudder.Hydrodynamic interaction between them was achieved by interactive calculation.The normal force coefficient on open water of flap and normal rudder were calculated which were compared with the results of test.The normal force coefficient of flap rudder on open water is bigger than normal rudder,and the striking angle ratio shows great influence on the performance of them.Compared with the open water,the normal force coefficient of flap rudder is increased with different amplitude.This paper also calculated the pressure distribution of flap rudder on the conditions of 1/4 striking angle ratio and the thrust coefficient is 0.5.The result of pressure distribution of flap rudder behind propeller is great different from the open water condition.