中文摘要：

基于ANSYS Workbench平台,利用其多场分析功能,采用求解RANS方程的方法,利用CFX求解器对螺旋桨3维流场进行数值模拟,利用有限元求解器计算螺旋桨结构响应,并将有限元求解器的设置输出为结构求解子程序,供CFX计算时调用以实现数据的实时双向传递,从而将流体计算与结构变形计算耦合起来,给出一种求解螺旋桨流固耦合问题的3维数值模拟方法,并通过与试验数据的比较验证了方法的可靠性.设定2种材料特性,对螺旋桨的水动力性能、桨叶变形及应力应变特性等进行了数值模拟.结果表明：材料特性对变形及应变较为显著,弹性桨的变形与应变较刚性桨约高1个量级;变形后的螺旋桨又对水动力性能及周围流场产生影响,弹性桨的推力和转矩均比刚性桨小.

英文摘要：

Based on ANSYS Workbench platform, FSI algorithm was established to consider the unsteady viscous fluid of propeller. To make use of respective advantages of computational fluid dynamics and com- putational structural mechanics, the external CFX solver functions were used. A 3-D numerical simula- tion method was presented to investigate the fluid-structure interaction of marine propellers. The coupled simulation was implemented by a two-way technique with the on-line transmission between fluid load and structure response data in ANSYS software. The method reliability was verified by comparing with experi- mental data. The hydrodynamics, the blade deformation, the stress and strain of a propeller with two dif- ferent materials were simulated. The results show that material characteristics have remarkable effect on the deformation and strain of blade. The deformation and the strain of flexible blade have an order of magnitude higher than that of rigid blade. The deformed propeller has influence on hydrodynamics and flow field. The thrust and the torque of flexible propeller are smaller than those of rigid propeller.