摘要
为研究复合材料对螺旋桨水动力性能和结构特性的影响,在Workbench平台上,采用基于粘性流理论的计算流体力学方法与有限元软件实现流体载荷与结构变形的双向耦合传递。以DTMB4381为研究对象,首先考虑镍铝青铜(NAB)螺旋桨的微小变形,采用双向流固耦合方法计算不同进速系数下的水动力性能,并与敞水试验值进行对比,误差较小,验证了双向流固耦合方法的准确性。然后将复合材料考虑为各向同性,对玻璃纤维材料螺旋桨进行双向流固耦合求解,得到复合材料螺旋桨在不同进速系数下的水动力性能及结构特性,并将流体和结构计算结果与传统的金属螺旋桨比较分析,总结材料对螺旋桨性能的影响。双向流固耦合方法为今后各向异性复合材料螺旋桨的深入研究打下基础。
To explore the hydrodynamic and structural performance of composite propeller, we combine CFD solver CFXbased on viscous flow theory with FEM solver ANSYS Mechanical in the commercial software ANSYS Workbench to accomplish two-way fluid-structure interaction. The open water performance of DTMB4381 made of NAB in different advance coefficient was numerically simulated by two -way FSI method considering its small deformation, and the numerical results were compared with experimental results for confirming the validity of coupled FSI. Then coupled FSI method was used to solve the performance of DTMB4381 made of isotropic glass fiber composite, and the hydrodynamic and structural performance were obtained. Compare the results with those of NAB 4381 propeller to test the effect of material on the performance of propeller.
出处
《舰船科学技术》
北大核心
2015年第10期16-20,共5页
Ship Science and Technology
基金
国家自然科学基金资助项目(51179198)
关键词
双向流固耦合
复合材料
螺旋桨
敞水性能
two-way fluid-structure coupling
composite
propeller
open water performance
