The effect of AUV wake on propeller performance based on fluid-structure interaction
The operating conditions of AUV propeller are usually in non-uniform flow,which is mainly caused by stern companion flow during AUV sailing.Non-uniform flow in order to analysis influence on propeller hydrodynamic and noise,the P 4 119 propeller was used to verify the feasibility and accuracy of the two-way fluid-structure coupling numerical simu-lation.Secondly,the AUV and B-type propeller coupling model was established to compare the propeller dynamic perform-ance and no cavitation noise distribution under two working conditions.The results show under the influence of non-uni-form incoming flow from AUV stern,the thrust and torque required by the propeller are improved,and the increase can reach 83.77％and 50.50％respectively at the highest point.Compared with the weak influence of the accompanying flow on the propeller noise at blade passing frequency,the sound pressure level of the propeller noise at each monitoring point at two and three times of blade passing frequency is attenuated by 20～50 dB compared with the uniform flow,and the distribution of propeller noise at two times of blade passing frequency presents an irregularity.
NETL
NSTL
万方数据
