Noise optimization of a regenerative automotive fuel pump

2016 2nd International Conference on Mechanical and Aeronautical Engineering (ICMAE 2016)

机械制造;航空航天工程

Wang, J.F.^1 ; Feng, H.H.^1 ; Mou, X.L.^1 ; Huang, Y.X.^1

School of Mechanical Engineering, Beijing Institute of Technology, Beijing

100081, China^1

关键词: Acoustic characteristic;    Acoustical model;    Blade passing frequency;    Computational acoustics;    High frequency HF;    Noise optimization;    Regenerative pumps;    Sound pressure level;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/187/1/012035/pdf
DOI  :  10.1088/1757-899X/187/1/012035

学科分类：航空航天科学

来源: IOP

【 摘 要 】

The regenerative pump used in automotive is facing a noise problem. To understand the mechanism in detail, Computational Fluid Dynamics (CFD) and Computational Acoustic Analysis (CAA) together were used to understand the fluid and acoustic characteristics of the fuel pump using ANSYS-CFX 15.0 and LMS Virtual. Lab Rev12, respectively. The CFD model and acoustical model were validated by mass flow rate test and sound pressure test, respectively. Comparing the computational and experimental results shows that sound pressure levels at the observer position are consistent at high frequencies, especially at blade passing frequency. After validating the models, several numerical models were analyzed in the study for noise improvement. It is observed that for configuration having greater number of impeller blades, noise level was significantly improved at blade passing frequency, when compared to that of the original model.