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Old 04-21-2022, 12:22 PM   #170 (permalink)
aerohead
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delta-Cd without sides?

Quote:
Originally Posted by Phase View Post
Well that wheel well skirt was already drawn there in the original pic if you’d look at it. I only deleted the wheels lol. No idea why their sketch had that

Obviously I’ll do box cavity sides, but even without those, I should see some type of aero improvement with the extended rear diffuser and longer spoiler right?
1) It's never been done.
2) Two surfaces of the body will be experiencing pressure increase, while two surfaces will be in separated flow.
3) The wake is going to take on the low pressure of the separation line at the sides, not at the rear of the spoilers. It's explained in your book, "Modifying the Aerodynamics of........................, Figure 4-14, page 80.
4) Hyundai's OEM diffuser is an unknown quantity. Without a full belly pan in front of it, by default, it cannot be effective, and may just be serving as an aerodynamic 'styling cue.'
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