Open Access

ARTICLE

Computation of Aerodynamic Noise Radiated From Open Propeller Using Boundary Element Method

Jun Huang^1,2, Chaopu Zhang¹, Song Xiang², Liu Yang¹, Mingxu Yi¹

1 School of Aeronautic Science and Engineering, Beihang University, Beijing, China
2 Liaoning Key Laboratory of General Aviation, Shenyang Aerospace University, Shenyang, China

Computer Modeling in Engineering & Sciences 2015, 108(5), 315-330. https://doi.org/10.3970/cmes.2015.108.315

Abstract

In order to accurately predict the aerodynamic noise of the propeller, a hybrid method combining Computational Fluid Dynamics (CFD) method with Boundary Element Method (BEM) is developed in this paper. The calculation includes two steps: firstly, the unsteady viscous flow around the propeller is calculated using the CFD method to acquire the noise source information; secondly, the radiated sound pressure is calculated using BEM method in the frequency domain. In comparison with the experimental results from wind tunnel, the calculated results of aerodynamic performance are rather desirable. The simulation and experimental results of aerodynamic noise are well fitted. The directivity of sound pressure levels (SPLs) of propeller noise is shown in this paper. Simulation shows that the method can effectively calculate aerodynamic noise of the propeller. The acoustic analysis draws some meaningful conclusions.

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Keywords

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