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Design and Experimental Validation of a Ducted Counter-rotating Axial-flow Fans System

Article dans une revue avec comité de lecture
Author
NOURI, Hussain
ccSARRAF, Christophe
134975 Laboratoire de Dynamique des Fluides [DynFluid]
REY, Robert
ccRAVELET, Florent
134975 Laboratoire de Dynamique des Fluides [DynFluid]
ccBAKIR, Farid

URI
http://hdl.handle.net/10985/8541
DOI
10.1115/1.4007591
Date
2012
Journal
Journal of Fluids Engineering

Abstract

An experimental study on the design of counter-rotating axial-flow fans was carried out. The fans were designed using an inverse method. In particular, the system is designed to have a pure axial discharge flow. The counter-rotating fans operate in a ducted-flow configuration and the overall performances are measured in a normalized test bench. The rotation rate of each fan is independently controlled. The relative axial spacing between fans can vary from 17% to 310%. The results show that the efficiency is strongly increased compared to a conventional rotor or to a rotor-stator stage. The effects of varying the rotation rates ratio on the overall performances are studied and show that the system has a very flexible use, with a large patch of high efficient operating points in the parameter space. The increase of axial spacing causes only a small decrease of the efficiency

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