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Realistic Effects of Winds on the Aerodynamic Resistance of Automobiles
ISSN: 0148-7191, e-ISSN: 2688-3627
Published February 01, 1978 by SAE International in United States
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To date the effects of winds on the computed fuel economy of highway vehicles have been omitted or included in simple ways. This paper presents the results of a rigorous computer study on the realistic effects of winds upon the aerodynamic resistance, and consequently, upon the fuel consumption of automobiles for EPA driving cycles. The aerodynamic resistance was a function of the instantaneous wind direction and speed relative to the car. A wind spectrum having an annual speed of 10 mph will increase the zero-yaw aerodynamic resistance by 16% for the Combined driving cycle. Several simplistic approaches were evaluated against rigorously obtained results.
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CitationDayman, B., "Realistic Effects of Winds on the Aerodynamic Resistance of Automobiles," SAE Technical Paper 780337, 1978, https://doi.org/10.4271/780337.
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