Abstract:

Noise of direct air cooling system mainly consists of fan group aerodynamic noise and is mainly from dipole. Air cooling island fluid field simulation and noise estimation was carried out based on Fluent acoustics module. Which indicated that Fluent effectively simulated fluid field. To improve environmental influence from direct air cooling system, lowering low frequency noise could be considered. 

Key words:

direct air cooling, aerodynamic noise, fluid field analysis, noise evaluation, fans group, low frequency noise