Turbocharger Noise Prediction Using Broadband Noise Source Model

The noise prediction of the turbocharger is studied. The broadband noise source model is employed to predict the near-field noise of the turbocharger. The 3D software Solidworks is adopted to establish the model blades and inlet of turbocharger compressor, then this 3D model is introduced into the software CFD to calculate the flow-field under different inlet shapes, different blades shapes and different clearances between casing and impeller. On the base of the above simulation, the broadband noise source model is employed to calculate and analyze the near-field noise. The calculation shows that compressor static pressure values and the sound power values near the impeller outlet are the largest. Through the noise calculation by using broadband noise source model under different inlet shapes and blade shapes, we find that the noise level of the inlet of cylindrical and cone types are smaller. Compared with the current widespread used backward skewed or radial blades, there is little difference of the noise value of the inlet of the forward skewed blades.     

友谊·合作·发展——首届中国饮食文化国际研讨会在北京举行 论文一百四十八篇入选论文集·海外二百五十佳宾应邀出席

在中国大陆第一次举办的“首届中国饮食文化国际研讨会”,经过一年多的筹备,于7月16日在北京人民大会堂隆重开幕,并在北京饭店进行了为期5天丰富多彩的研讨活动.