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Old 05-11-2020, 05:32 AM   #107 (permalink)
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Originally Posted by Vman455 View Post
I would be hesitant to guess that. I came across this passage in one of the textbooks I read earlier this year and underlined it since I was surprised by it:

"The front wheels contribute the bulk (about 65%) of the total wheel drag in cars because the rear wheels are typically in the wake of the front wheels, only experiencing some of the vortices generated by the front wheel interaction with the car-body air flow, and the lower edge of the trailing stream flow from the front wheel (Fig. 5.8)" [Obidi, T.Y. Theory and Applications of Aerodynamics for Ground Vehicles, (Warrendale: SAE International, 2014), 122].
Just an aside, that is the second-poorest aerodynamic textbook in my entire collection. I am amazed the SAE published it. And, given its price and publisher, I had such high hopes!
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