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CFD and CAA Analysis of Centrifugal Fan for Noise Reduction

by S. Ramakrishna, Vommi Krishna, A. Ramakrishna, K. Ramji
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International Journal of Computer Applications
Foundation of Computer Science (FCS), NY, USA
Volume 86 - Number 7
Year of Publication: 2014
Authors: S. Ramakrishna, Vommi Krishna, A. Ramakrishna, K. Ramji
10.5120/14996-3008

S. Ramakrishna, Vommi Krishna, A. Ramakrishna, K. Ramji . CFD and CAA Analysis of Centrifugal Fan for Noise Reduction. International Journal of Computer Applications. 86, 7 ( January 2014), 10-16. DOI=10.5120/14996-3008

@article{ 10.5120/14996-3008,
author = { S. Ramakrishna, Vommi Krishna, A. Ramakrishna, K. Ramji },
title = { CFD and CAA Analysis of Centrifugal Fan for Noise Reduction },
journal = { International Journal of Computer Applications },
issue_date = { January 2014 },
volume = { 86 },
number = { 7 },
month = { January },
year = { 2014 },
issn = { 0975-8887 },
pages = { 10-16 },
numpages = {9},
url = { https://ijcaonline.org/archives/volume86/number7/14996-3008/ },
doi = { 10.5120/14996-3008 },
publisher = {Foundation of Computer Science (FCS), NY, USA},
address = {New York, USA}
}
%0 Journal Article
%1 2024-02-06T22:03:34.968129+05:30
%A S. Ramakrishna
%A Vommi Krishna
%A A. Ramakrishna
%A K. Ramji
%T CFD and CAA Analysis of Centrifugal Fan for Noise Reduction
%J International Journal of Computer Applications
%@ 0975-8887
%V 86
%N 7
%P 10-16
%D 2014
%I Foundation of Computer Science (FCS), NY, USA
Abstract

Centrifugal fans usually operate at high rotating speeds and hence generate high levels of noise whose reduction over a broad range of operating conditions is a key concern for the designer. An important first step in this direction is identification of noise sources and its quantification. For this purpose, Computational Fluid Dynamics (CFD) and computational aeroacoustic analyses is performed on centrifugal fans with backward impeller, radial impeller and forward impellers using CFD code FLUENT. To validate these results noise measurements are performed on centrifugal fans with backward impeller, radial impeller and forward impellers. The results so obtained from numerical analyses are compared with the measurement results. It is found that there is good agreement between numerical and experimental results. From these results it is observed that least noise of 92. 6 dB(A) and high flow rate of 0. 399 m3/sec occurs with backward impeller whereas large noise of 102. 5 dB(A) and least discharge of 0. 365 m3/sec is observed with forward impeller. The present study concludes that backward impeller radiates less noise and high discharge compared to radial and forward impellers.

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Index Terms

Computer Science
Information Sciences

Keywords

Centrifugal fan backward impeller radial impeller forward impeller CFD aeroacoustics

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