Design and Experimental Validation of a Ducted Counter-rotating Axial-flow Fans System
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
Keywords
Cite
@article{arxiv.1208.6396,
title = {Design and Experimental Validation of a Ducted Counter-rotating Axial-flow Fans System},
author = {Hussain Nouri and Florent Ravelet and Farid Bakir and Christophe Sarraf and Robert Rey},
journal= {arXiv preprint arXiv:1208.6396},
year = {2012}
}
Comments
accepted in Journal of Fluid Engineering