Numerical simulation of fluidstructure interaction
characteristics for propeller
1.College of Basic Education of Commanding Officers, National University of Defense Technology, Changsha, Hunan 410072, China; 2.Department of Naval Architecture, Naval University of Engineering, Wuhan, Hubei 430033, China
Abstract：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 computational structural mechanics, the external CFX solver functions were used. A 3D numerical simulation method was presented to investigate the fluidstructure interaction of marine propellers. The coupled simulation was implemented by a twoway technique with the online transmission between fluid load and structure response data in ANSYS software. The method reliability was verified by comparing with experimental data. The hydrodynamics, the blade deformation, the stress and strain of a propeller with two different 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.
2015, Vol. 36 
