Aeroacoustic Noise Analysis of a Locomotive Cooling System Ducts and Structure Optimization

International Journal of Engineering and Technology Innovation

卷:5

关键词: Flow field analysis;    Aero acoustic analysis;    BNS model;    FW-H model;   

DOI  :  

来源: DOAJ

【 摘 要 】

Aero acoustic noise of a locomotive cab cooling system ducts was analyzed by method of Computational FluidDynamics (CFD) and Computational Aero acoustic (CAA) approach. Flow characteristic of the ducts was analyzedby CFD software, then near-field and far-field aero acoustic noise was forecasted with BNS model and FW-H modelrespectively. Duct structure was optimized according to the analysis of flow field and sound field. Results indicatedthat noise characteristic of sensitive frequency band at the position of human ear with the optimized duct has asignificant improvement.

【 授权许可】

Unknown