This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Downstream Blockage Corrections of Automotive Cooling Fan Module Performance
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 20, 2009 by SAE International in United States
Annotation ability available
A novel, simple and rapid method for predicting the performance effects of blockage downstream of an automotive cooling fan is presented. Fans are often tested without downstream blockage and, thus, the performance is considerably different when the fan is mounted in a vehicle as part of a cooling system. An easy to use tool is needed that can quickly predict fan performance modifiers.
The suggested approach is able to predict the significant effects of a blockage behind the fan. Two fans were analyzed with this new method. Comparison charts between tests and predictions showed good agreement over a range of blockage distances. Based on the results the method is considered beneficial for initial design procedures. Although the agreement was poorer at very close separation distances such small gaps are less commonly utilized in practice. Further work is needed to include those distances in the present model.
CitationHunt, A., Savory, E., Gifford, N., and Martinuzzi, R., "Downstream Blockage Corrections of Automotive Cooling Fan Module Performance," SAE Technical Paper 2009-01-0175, 2009, https://doi.org/10.4271/2009-01-0175.
- Lin, S. Chou, C 2004 Blockage Effect of Axial-Flow Fans Applied on Heat Sink Assembly Applied Thermal Engineering 24 16 2375 2389
- Ng, E.Y. 2002 Vehicle Engine Cooling Systems :Assessment and Improvement of Wind-Tunnel Based Evaluation Methods PhD Thesis, RMIT University
- Olsen M E. 1976 Aerodynamic Effects of Front End Design on Automobile Engine Cooling Systems SAE Transactions, 760188 883 892
- Gifford, N.L. Savory, E. Martinuzzi, R.J. Experimental Study of Automotive Cooling Fan Aerodynamics SAE World Congress, 2007-01-1525 2007
- Srinivasan, K. Jan, J.Y. Sun, R.L. Gleason, M.E. 2000 Rapid Simulation Methodology for Under-Hood Aero/Thermal Management International Journal of Vehicle Design 23 1-2 109 123
- Gifford, N.L. 2006 Experimental Study of Automotive Cooling Fan Aerodynamics Under Blocked Conditions MESc Thesis, University of Western Ontario
- ANSI/AMCA Standard 210-99 (ANSI/ASHRAE 51-1999) Laboratory Method of Testing Fans for Aerodynamic Performance Rating Air Movement and Control Association, Inc. 1999
- ASHRAE Handbook 1997 Fundamentals ASHRAE 1997 2.10 2.12
- White, F.M. 2003 Fluid Mechanics 4th Ed. McGraw Hill 373