Influence of Stern Rudder Type on Flow Noise of Underwater Vehicles

The stern rudder of an underwater vehicle has a significant impact on the wake field and flow noise. Hence, it is important to optimize design for reducing radiated In this work, numerical model set up predict noise vehicle, based LES turbulence FW-H acoustic analogy method. After verification study, prediction compared with experimental measurements verify accuracy model. Then, influence sails explored. It observed that existence sail significantly increases at low frequency. Furthermore, examine type, sound pressure levels vehicles three full appendages having cross-type rudders, X-type T-type are compared. strong interaction between sail’s evident. rudders exhibits lowest pressure. addition, type directivity also presented.