采用涡格法和面元法预报吊舱推进器非定常水动力性能(英文)  

Using Vortex Lattice and Surface Panel Method to Predict the Unsteady Hydrodynamic Performance of Podded Propulsors

作　　者：马骋[1] 钱正芳[1,2] 陈科[1] 蔡昊鹏[1] 庄光宇[3] 

机构地区：[1]海军装备研究院 [2]海军工程大学 [3]中国人民解放军92001部队

出　　处：《船舶力学》2014年第9期1035-1043,共9页Journal of Ship Mechanics

摘　　要：文章发展了一种预报吊舱推进器非定常水动力性能的数值方法。该方法分别基于涡格法和面元法对螺旋桨叶片和吊舱进行计算。螺旋桨工作在船体和吊舱包后的非均匀来流中,其对吊舱包和支架的非定常诱导速度在文中进行了时均处理。用该数值方法分别预报了有无船体情况下的四叶桨吊舱推进器水动力性能,并通过与空泡水筒的推力、扭矩实验数据相比较,验证了数值方法的有效性。该文还基于数值结果讨论了吊舱对于螺旋桨非定常力和力矩的影响,说明吊舱包—支架单元所诱导的伴流对螺旋桨受力是有较大影响的。A numerical method was developed for predicting the unsteady hydrodynamic forces acting upon a propeller mounted on a pod. The method is based on a vortex lattice method for the propeller blades and a surface panel method for the pod. The unsteady velocities induced by propeller blades are time-averaged at the control points on the pod surface, while the propeller is considered to operate in a spatially inhomogeneous inflow due to the presence of the pod and the hull. Numerical computations are carried out for a 4-bladed propeller mounted on a pod, without and with the hull. The steady thrust and torque measured in a cavitation tunnel are used to partly validate the present method. The effect of pod on unsteady propeller forces and moments is discussed based on numerical results. The results indicate that the effect of the pod-strut unit＇s effective wake is significant.

关 键 词：吊舱推进器 非定常性能 涡格法 面元法 

分 类 号：U664.3[交通运输工程—船舶及航道工程]