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TECHNICAL PAPERS

An Aerodynamic Shroud for Automotive Cooling Fans

[+] Author and Article Information
Scott C. Morris, John F. Foss

A38 Research Complex Engineering, Michigan State University, East Lansing, MI 48823

J. Fluids Eng 123(2), 287-292 (Dec 31, 2000) (6 pages) doi:10.1115/1.1359212 History: Received June 19, 2000; Revised December 31, 2000
Copyright © 2001 by ASME
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References

Adamczyk,  J. J., Celestina,  M. L., and Greitzer,  E. M., 1993, “The Role of Tip Clearance in High Speed Fan Stall,” ASME J. Turbomach., 115, pp. 28–31.
Lakshminarayana,  B., 1970, “Methods of Predicting the Tip Clearance Effects in Axial Flow Turbomachinery” ASME J. Basic Eng., 82, Sept, pp. 467–482.
Lakshminarayana, B., 1996, Fluid Dynamics and Heat Transfer of Turbomachinery, Wiley, New York.
Baranski, B., 1974, “Designing the Engine Cooling Fan,” SAE paper No. 740691.
Mellin, 1980, “Noise and Performance of Automotive Cooling Fans,” SAE paper No. 800031.
Foss, J. F., 1998, “Improved Cooling Fan Shroud,” U.S. Patent No. 5,762,034.
Foss, J. F., and Morris, S. C., 1999, “Fan Shroud with Integral Air Supply,” U.S. Patent No. 5,991.685.
Wilson,  D. J., and Goldstein,  R. J., 1976, “Turbulent Wall Jets with Cylindrical Streamwise Surface Curvature,” ASME J. Fluids Eng., 98, pp. 550–557.
Ameri,  M., and Dybbs,  A., 1993, “Theoretical Modeling of Coanda Ejectors,” Journal of Fluid Machinery, 16, pp. 43–48.
Shaouchi,  T., Onohara,  Y., and Kato,  S., 1989, “Analysis of a Two-Dimensional, Turbulent Wall Jet Along a Circular Cylinder,” JSME Int. J., Ser. II, 32, No. 3, pp. 332–339.
Morris, S. C., Foss, J. F., and Pakkala, J. E., 1997, “The Automotive Cooling Fan Research and Development Facility,” Proceedings of the 3rd Vehicle Thermal Management Systems Conference, Indianapolis IN, USA.
Morris, S. C., Neal, D. R., Foss, J. F., and Cloud, G., 2000, “A Unique Airflow Measurement Device,” accepted to Meas. Sci. Technol.
Morris, S. C., 1997, “Experimental Investigation of an Aerodynamic Shroud for Cooling Fan Applications,” Masters thesis, Michigan State University, East Lansing, MI.
Morris,  S. C., Good,  J. J., and Foss,  J. F., 1998, “Velocity Measurements in the Wake of an Automotive Cooling Fan,” Exp. Therm. Fluid Sci., 17, pp. 100–106.

Figures

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Schematic of aerodynamic shroud
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Schematic of ACFRD facility
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Fan pressure (ψ) vs. shroud power (χ) for two fan flow rates
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Performance data for fan and shroud conditions A B C D are labeled with their respective (ϕ,ψ,χ) values
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Representative (x-r) plane digital image of fan and tuft at condition D (ΔPshr=0=χ)
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Tuft obervations in the x-r plane for conditions A and B
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Tuft observations in the x-r plane for conditions C and D
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Fan performance curve for modified shroud geometry

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