Numerical Investigation on the Characteristics of Flow-Induced Noise in a Centrifugal Blower
スポンサーリンク
概要
- 論文の詳細を見る
In the present study, a computational analysis of the flow in a centrifugal blower is carried out to predict a performance and to explain noise characteristics of the blower. Unsteady, 3D Navier-Stokes equations were solved with k-ε turbulence model using CFX software. CFD results were compared with the experimental data that is acquired from an experiment conducted with the same blower. The pressure fluctuation in the blower was transformed into the frequency domain by Fourier decomposition to find the relationship between flow behaviors and noise characteristics. Sound pressure level (SPL) which is obtained from wall pressure fluctuation at impeller outlet represents relative overall sound level of the blower well. Sound spectra show that there are some specific peak frequencies at each mass flow rate and it can be explained by flow pattern.
- ターボ機械協会、韓国流体機械学会、中国工程熱物理学会、国際水理学会の論文
ターボ機械協会、韓国流体機械学会、中国工程熱物理学会、国際水理学会 | 論文
- Prediction of Wear Depth Distribution by Slurry on a Pump Impeller
- Computational Investigations of Impingement Heat Transfer on an Effused Concave Surface
- Influence of Blade Outlet Angle and Blade Thickness on Performance and Internal Flow Conditions of Mini Centrifugal Pump
- Experimental Study on Surge Inception in a Centrifugal Compressor
- Erratum:Dynamic Analysis of Francis Runners - Experiment and Numerical Simulation[International Journal of Fluid Machinery and Systems Vol. 2 (2009) , No. 4 (October-December), pp.303-314]