弹性螺旋桨的流固耦合变形特征分析

In this paper, a numerical simulation of the fluid-structure coupling deformation of an elastic propeller is performed. The fluid-structure coupling analysis is based on the combination of computational fluid dynamics and finite element methods, and is implemented on the ANSYS-workbench platform. In order to study the deformation characteristics of the elastic propeller, the hydrodynamic properties and blade deformation of the propeller with different diameters and Young's modulus are calculated for a DTMB-4119 propeller. According to the existing literature data, the method of dimensionless analysis is reasonable. Comparing the deformation of unidirectional and bidirectional fluid structure coupling, it is found that there are some differences between them, but the difference is not significant. Further analysis shows that the difference in deformation amount is due to the influence of bidirectional fluid-structure coupling on the propeller performance.