Ship Propeller Broadband Noise Prediction Using the LES and CAA

摘要

In this paper, a prediction method of marine propeller broadband noise is developed based on Amiet's model. The strip theory is used, and the hydrofoil noise spectrum is predicted using Large Eddy Simulation (LES) methods and Ffowcs Williams-Hawkings (FW-H) equations. Using the noise numerical prediction method, the broadband noise from a propeller working in uniform flow is calculated. Comparison between calculations and model experiments shows that the variation trends of propeller noise spectrum levels are consistent, and the difference in total sound pressure level can satisfy the requirements in engineering prediction.