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arXiv · 1208.6396

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

Hussain Nouri·Florent Ravelet·Farid Bakir·Christophe Sarraf·Robert Rey
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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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Hussain Nouri, Florent Ravelet, Farid Bakir, Christophe Sarraf, Robert Rey. 2012-08-31. Design and Experimental Validation of a Ducted Counter-rotating Axial-flow Fans System. https://doi.org/10.1115/1.4007591

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