Realistic Effects of Winds on the Aerodynamic Resistance of Automobiles
780337
02/01/1978
- Event
- Content
- 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.
- Pages
- 16
- Citation
- Dayman, B., "Realistic Effects of Winds on the Aerodynamic Resistance of Automobiles," SAE Technical Paper 780337, 1978, https://doi.org/10.4271/780337.