桨舵系统非定常水动力性能的整体求解法

An integral solution for predicting the unsteady performance of a propeller-rudder system

为了研究桨舵系统的非定常水动力性能,采用整体法求解桨舵系统干扰问题.通过面元间影响系数变化来考虑二者间的干扰,桨舵水动力性能同时求解.改进了整体计算法,简化了影响系数变化的复杂规律,完善了理论计算方法.利用ITTC推荐的HSP桨对程序的可靠性进行了验证.讨论了螺旋桨尾涡对舵的影响,计算了均匀来流中桨舵系统的水动力性能,将非定常计算结果均值与定常结果进行了对比.比较结果表明,利用整体法计算桨舵非定常水动力性能具有较好的可行性.

In order to investigate the unsteady performance of a propeller-rudder system,the integral solution method was adopted for prediction purposes.The interaction between propeller and rudder was considered by recalculating influence coefficients,and both were solved at the same time.The calculation model was consummated by predigesting complex rulers of influence coefficients.A propeller called HSP produced by the propulsion committee of the 22nd ITTC was used to validate the veracity of the program.Influence of propeller wake on the rudder was studied,and the propulsion performance of a propeller and rudder system was calculated in steady flow.The mean value of computation of unsteady flow was compared with that of the steady flow.Comparison results indicate that it is feasible to use the integral solution method for predicting the unsteady performance of a propulsion system.