Abstract
The pulsating excitation and vibration response of a highly skewed propeller, running in wake field, was studied by the Fluid-Solid Interaction (FSI) simulation. Coupling calculation of elastic propeller was realized on ANSYS-CFX modules based on the CFD/FEM FSI method, and the rigid results were compared. The results show that, the pulsating thrust of the elastic propeller considering FSI effect has the same low frequency peak as the rigid except the low frequency elastic peak (the first-order natural frequency of propeller), and the low-frequency broadband force amplitude of the elastic propeller is an order of magnitude higher than the rigid. In addition to the correlation between blade frequency and shaft frequency, the propeller also has obvious vibration response at the lower natural frequency. The results are significant to the prediction and control of propeller vibration response.
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