Author(s)

Agung Purwana, Wisnu Wardhana, I Made Ariana and Dhimas Widhi H

Corresponding Author

Agung Purwana

ABSTRACT

Radiated underwater noise is a signature of requirements related to survival in carrying out missions and concerns about marine environmental issues. On submarine propulsion system, the noise is resulted by propeller cavitation. In this study, numerical simulations with MRF (multiple reference frame) techniques are used to predict cavity and cavitation noise around propellers. The formulation of Reynold Averaged Navier Stokes with turbulence model k-omega Shear Stress Transport and Fast Fourier Transform is applied on the simulation. The far-field radiation at different operating conditions is calculated by the FW-H (Ffowcs Williams-Hawkings) equation. The effect of rotation and skew propeller angles on the shape and area of cavity and cavitation noise are simulated. Noise characteristics are presented according to different positions of hydrophones and speeds of the propeller. 3D model of symmetrical blade propeller in D=200 mm, blade number Z=7, pitch diameter ratio P/D= 0.816, area ratio Ae/Ao=0.88, skew angle 54 degree, is simulated on various propeller rotation and advance coefficient (J).

KEYWORDS

Numerical study, submarine propeller, cavitation noise.