非定常桨舵组合体水动力性能频域谐调分析法

A Method of Hamonic Analysis for Unsteady Hydrodynamic Performance Calculation in the Interaction Between Propeller and Rudder

针对桨舵干扰中出现的非定常周期性问题，提出频域内的谐调分析法，以避免迭代计算中出现的收敛性问题，并可大大减少计算工作量．在计算中螺旋桨采用非定常升力面理论，舵采用分离涡模型，使用面奇点分布法求解不同谐调阶桨舵干扰时非定常水动力性能，并与定常实验值进行了比较．

The paper proposes a method of harmonic analysis in frequency domain to solve the unsteady periodical problem arising in the interaction between propeller and rudder,which can avoid the computing divergence and greatly reduce the computing labor. In this method,the propeller employs the unsteady lifting surface theory and the rudder engages the separatemodel. The unsteady hydrodynamic performance can be calculated for the each order harmonic interaction between propeller and rudder by using surface singular point distribution method. The calculating results are compared with the steady experimental those.