Analysis of Aerodynamic Noise Performance of Radial-flow Fans with Eagle Wing Imitative Blades
A three-dimensional model is created for further optimization of the aerodynamic noise of radial-flow fans.With the radial-flow fan in a subway air-conditioning system as the research object,the 40%section of the sparrowhawk's wing is extracted as a reference to reconstruct the fan's blade.Based on Fluent software and Realizable K-ε model,the flow field and aerodynamic noise of the fan with falcon-wing imitative blades are analyzed by using numerical simulation and sound analogy with FW-H equation.The results show that compared with the original fan,the air volume of the improved fan is increased by 2.67 m³/min,the impeller efficiency is increased by 3.07%,and the noise is reduced by 2.34 dB,which can effectively inhibit the vortex noise and improve the aerodynamic and acoustic performance of the radial-flow fan.
acousticsradial-flow fanbionic bladeflow field simulationaerodynamic performancefan noise
万方数据
维普
