Title: Study of the 3D flows in the forward-curved blades centrifugal fans

Authors: T. Bouquet, S. Kouidri, F. Bakir, R. Rey

Addresses: Lemfi - Site Paris, 151 boulevard de l'hopital, 75013 Paris, France. ' Lemfi - Site Paris, 151 boulevard de l'hopital, 75013 Paris, France. ' Lemfi - Site Paris, 151 boulevard de l'hopital, 75013 Paris, France ' Lemfi - Site Paris, 151 boulevard de l'hopital, 75013 Paris, France '

Abstract: The study presented in this paper is part of the research work on forward-curved blades centrifugal fans carried out over the last few years by the ||Laboratoire d.Energetique et de Mecanique des Fluides Interne|| (Lemfi - Site Paris). The objective of this study is to better understand the internal flow in this type of machine in order to be able to correlate the aeraulic and acoustic behaviours with the geometrical characteristics of the machine. Two impellers with different profiles were manufactured and tested. The aeraulic and acoustic tests were carried out on a test bench standardised ISO 5801. The 3D CFD of the flow was carried out with a commercial code based on the resolution of the Navier-Stokes equations in finite volumes. The analysis of these results confirms that a more organised flow field leads to a better acoustic performance.

Keywords: aero acoustics; CFD; centrifugal fans.

DOI: 10.1504/PCFD.2003.003768

Progress in Computational Fluid Dynamics, An International Journal, 2003 Vol.3 No.1, pp.13 - 21

Published online: 29 Dec 2003 *

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