Hydro-acoustic and structural analysis of marine propeller using two-way fluid–structure interaction

• Published in: Journal of marine science and technology 2024, Vol.29 (2), p.418-431
• Main Authors: Sanaka, Srinivas Prasad, Krishna, V. Rama, Ramanaiah, K.
• Format: Article
• Language: English
• Subjects: Automotive Engineering; Deformation; Engineering; Engineering Design; Engineering Fluid Dynamics; Fluid flow; Fluid-structure interaction; Frequency ranges; Hydrodynamics; Large eddy simulation; Mechanical Engineering; Noise prediction; Offshore Engineering; Original Article; Propellers; Sound pressure; Structural analysis; Structural behavior; Velocity
• ISSN: 0948-4280; 1437-8213
• DOI: 10.1007/s00773-024-00996-3

The aim of the paper is the prediction of noise generated by the propeller, hydrodynamic performance and the structural behavior of the marine propeller using two-way fluid–structure interaction (FSI) method at advanced velocities of 6, 8, 10, 12 and 14 Knots. ANSYS-Workbench software is used to establish the coupling between the fluid flow and structural solver. The computed hydrodynamic performance parameters of DTMB 4119 propeller at different advanced velocities and Sound Pressure Level (SPL) at advance coefficient of 0.833 are compared with the data available in the literature and found close agreement. The validated computational methodology is applied for the two-way FSI analysis of the marine propeller. Ffowcs William’s–Hawkings (FW–H) model is used to predict the noise spectrum over the frequency range of 0–10 kHz in FSI analysis. Large Eddy Simulation (LES) model is used to capture viscous effects. The speed of the propeller is 1000 rpm and advanced velocity is varied for the systematic study carried out. The effect of advanced velocity on the maximum stress induced in the propeller, deformation of the propeller, acoustic characteristics and hydrodynamic performance of the propeller are studied using FSI method.