Journal
OCEAN ENGINEERING
Volume 290, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.oceaneng.2023.116324
Keywords
Marine propellers; Hydrodynamics; Hydroelasticity; Computational fluid dynamics; Large eddy simulations; Nonlinear frequency domain solution method
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High-fidelity Large Eddy Simulations were used to study the effects of blade oscillation on the unsteady flow behavior and performance of composite marine propeller blades. The results showed that blade oscillation has a significant impact on vortex generation, which could affect the performance and structural integrity of the composite blades.
High-fidelity Large Eddy Simulations (LES) are conducted over the oscillating marine propeller blades to investigate the effects of blade oscillation on the unsteady flow behaviour as well as to analyse the performance of the composite marine propeller blades. The accuracy of the results is first verified against the reference experimental results. A nonlinear frequency-domain solution or harmonic solution method is also applied to this study, based on a high-fidelity LES model, in addition to the traditional time-domain solution method to investigate the capabilities of the frequency-domain method in predicting the unsteady flow parameters, vortex generation, and hydrodynamic damping to determine the stability of the propeller blades. Results obtained reveal that the oscillation of the blade has a great impact on the vortex generation process which could impose implications on the performance and structural integrity of the composite marine propeller blades.
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