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Tuesday, July 9 • 10:30 - 13:00
NUMERICAL STUDY ON HYDRODYNAMIC AND ACOUSTIC PERFORMANCE OF A REDESIGNED DUCTED PROPELLER

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The design and layout of rudders and propellers will greatly affect the handling performance of underwater vehicles, as well as the flow-induced noise characteristic which mainly produced by the propeller. In the present investigation, a redesigned ducted propeller with rear rudder inside the duct is proposed for revealing the effect of propeller-rudder coupling on the hydro-dynamic and acoustic performance of underwater vehicles at low speeds. The hydrodynamic numerical simulation of the redesigned ducted propeller is discussed by comparing the differ-ent spacing between the propeller and the rudder. Furthermore, the effects of rudder angle on the hydrodynamics and acoustic characteristics of the propeller are also investigated. The Reynolds-averaged Navier-Stokes (RANS) method is employed to formulate the steady flow field of the propeller. Moreover, after the steady flow field obtained, Ffowcs-Williams-Hawkings (FW-H) equation is adopted to reveal the flow-induced noise characteristic of the propeller.


Tuesday July 9, 2019 10:30 - 13:00 EDT
St-Laurent 3, Board 03-B
  T12 Underwater & marit. noise, RS01 Underwater sound