面元法在串列桨水动力性能预报中的应用

Application of Surface Panel Method in Tandem Propellers Hydrodynamic Performance Prediction

为了预估串列桨水动力性能,采用面元法建立了定常水动力干扰模型.前、后桨之间的干扰通过诱导速度进行考虑.由于前、后桨之间的相对位置保持不变,所以相互之间的诱导速度为瞬时诱导速度,前、后桨水动力性能通过定常求解获得,采用线性尾涡模型,彼此迭代直至水动力性能收敛.对三组串列桨进行计算并同实验值进行比较分析,结果表明:该方法可以有效地预报串列桨定常水动力性能.

In order to predict the tandem propeller hydrodynamic performance, the surface panel meth-d is used to establish the steady hydrodynamic interaction model. The interaction between the for-ward and aft screws is Considered through the induced velocities. Due to the relative position between the forward and aft screws remains the same, the induced velocities are instantaneous. The forward and aft screws＇ hydrodynamic performance is obtained through steady calculation, and the trailing vortex model used is linear, an iterative calculation method is used until the hydrodynamic perform-ance converges. Comparing the results of calculation about three sets of tandem propellers with the experimental data shows that this method can effectively predict the tandem propellers＇ steady hydro-dynamic performance.