Title :
Blade shape effect on noise and performance of forward centrifugal fan
Author :
Elsheikh, Bakri E. M. A. ; Jun Wang ; Yougen Huang
Author_Institution :
Fluid Mech. & Eng. Lab., Huazhong Univ. of Sci. & Technol., Wuhan, China
Abstract :
This work presents a numerical study of forward centrifugal fan. The study has been carried out to investigate the effect of impeller blades shape on fan performance and noise. Four models have been designed in different shapes of the blades curve. Computational fluid dynamics (CFD) software FLUENT has been applied to establish three-dimensional model of centrifugal fan. A steady and transient, Reynolds-averaged Navier-Stokes equation with the standard k-ε and LES are used for turbulence modeling. SIMPLE and PISO are used for pressure-velocity coupling for fan performance and noise simulation. The results illustrate the increasing of flow rate range with the increasing of blade curve length to a certain limit and then decreasing. Noise simulation also has the same trend.
Keywords :
Navier-Stokes equations; acoustic noise; aeroacoustics; blades; computational fluid dynamics; fans; impellers; shapes (structures); shear turbulence; CFD; FLUENT; LES; PISO; Reynolds-averaged Navier-Stokes equation; SIMPLE; blade shape effect; computational fluid dynamics; forward centrifugal fan; impeller blades; noise simulation; pressure-velocity coupling; standard k-ε turbulence modeling; Blades Curve; CFD; Forward Centrifugal Fan; Noise;
Conference_Titel :
Fluid Machinery and Fluid Engineering, 2014 ISFMFE - 6th International Symposium on
Print_ISBN :
978-1-84919-907-0
DOI :
10.1049/cp.2014.1188
