Evaluation of the Thermofluid Performance of an Automotive Engine Cooling-Fan System Motor-Reference-Cited by-同舟云学术

Evaluation of the Thermofluid Performance of an Automotive Engine Cooling-Fan System Motor

Published:2010-09-14 Issue:1 Volume:225 Page:74-89
ISSN:0954-4070
Container-title:Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering
language:en
Short-container-title:Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering

Author:

Savory E¹,Martinuzzi R J²,Ryval J¹,Li Z¹,Blissitt M³

Affiliation:

1. Department of Mechanical and Materials Engineering, University of Western Ontario, London, Ontario, Canada

2. Department of Mechanical and Manufacturing Engineering, University of Calgary, Calgary, Alberta, Canada

3. Siemens VDO Automotive (London) Inc., London, Ontario, Canada

Abstract

Experimental tests and computational fluid dynamics (CFD) simulations using the commercial code FLUENT were carried out to investigate the effects of the fan support hub geometry on the component heat transfer and cooling air flow through a simplified model of an electric motor for an automotive cooling-fan system, since little is known about the thermofluid dynamics of such machines. It has been found that the presence of radial ribs on the fan hub has a significant effect on drawing cooling air through the motor, particularly at lower air flowrates, regardless of the rotational speed. In addition, the rotational speed, hub diameter, fin height, and rib width are important parameters for inducing flow inside the hub while the tip gap and hub depth are not as influential. Increasing the number of ribs or fins has little impact on the performance of the hub. Good agreement was found between the experimental and predicted temperatures from heat transfer simulations of the motor for representative underhood environmental conditions. The present work shows that a valuable CFD tool can be developed to predict the temperature distribution inside the motor and offers a guide to the methodology whereby design modifications may be made to improve motor performance for a given application.

Publisher

SAGE Publications

Subject

Mechanical Engineering,Aerospace Engineering

Link

http://journals.sagepub.com/doi/pdf/10.1243/09544070JAUTO1416

Reference11 articles.

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