复合材料船用螺旋桨设计与CFD/FEM计算

Design of composite marine propeller and the calculation of CFD/FEM

摘要:

将基于RANS方程的计算流体力学方法与有限元方法相结合,沿着螺旋桨水动力性能计算、复合材料螺旋桨建模及结构铺层设计、CFD/FEM载荷传递、复合材料螺旋桨结构力学性能计算,水动力性能收敛判定的设计分析流程,完成了某种螺旋桨桨叶的初步的设计过程.提出一种预变形策略以改进复合材料螺旋桨的综合性能.计算结果表明,该复合材料螺旋桨能够满足预定设计指标的要求,在达到传统金属螺旋桨水动力性能要求的同时,减重30%,运行效率增加.研究结果充分说明了所采用设计方法的可行性.

Abstract:

In this paper,we combine the computational fluid dynamics method based on RANS equations and finite element method in the design of composite marine propeller.The primary design is completed through computing the hydrodynamic performance,conducting the finite element model,designing stacking sequence,transferring the load,calculating the mechanic performance of structure,and checking in the convergence in turn.A predeformation method is presented for improving the combination performance of composite propeller. The results show that the designed propeller can meet the hydrodynamic demand of the propeller made of metal,at the same time,reduce the weight by 30%and improve the efficiency.