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Contribution à la réduction des dissipations énergétiques dans les moto-ventilateurs à hautes vitesses.

Abstract : Nowadays, centrifugal fans are widely used in many industrial applications such as automotive, aeronautic, vacuum cleaner, etc. Due to their high adaptability, they can operate over a wide flow range especially with high speed rotation. In order to reduce the impact on environment, centrifugal fan as other energy conversion system has to display a high efficiency. However, a better understanding of their working and of the rotor-stator interaction is required to enhance their design and to make them widely integrated in current applications. The purpose of this study is to analyze and to quantify the influence of the solidity vaned diffusers on the performance of a centrifugal fan. A computational study has been conducted to analyze the performance of a centrifugal fan under various levels of impeller-diffuser interactions. The objective was to understand the pressure recovery phenomena in each diffuser. Different geometries were proposed to reduce both separation flow phenomenon and viscous losses. The geometries are all composed with the same impeller and return channel, only the vaned diffusers differ; the trailing edges are maintained at the same position while the leading edges have different radial positions. The characterization of the fan has been realized by an experimental setup designed and built in agreement to the standards ISO 5801 and 516
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Submitted on : Friday, November 25, 2016 - 5:01:51 PM
Last modification on : Wednesday, September 28, 2022 - 5:57:15 AM
Long-term archiving on: : Monday, March 20, 2017 - 11:35:09 PM


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  • HAL Id : tel-01403325, version 1


Salah Izerrouken. Contribution à la réduction des dissipations énergétiques dans les moto-ventilateurs à hautes vitesses.. Mécanique []. Ecole nationale supérieure d'arts et métiers - ENSAM, 2016. Français. ⟨NNT : 2016ENAM0041⟩. ⟨tel-01403325⟩



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