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Old 05-31-2020, 04:01 AM   #7 (permalink)
JulianEdgar
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Quote:
Originally Posted by California98Civic View Post
You can see evidence of the downwash from the roof
I just see attached flow from the roof onto the rear window.

Quote:
Originally Posted by California98Civic View Post
the c-pillar vortices
I can see no evidence of these in the tuft pattern.

Quote:
Originally Posted by California98Civic View Post
the recirculation bubble around the third tail light
I'd just call it a very small separation bubble - hard to guess the pattern of flow within the bubble.

Quote:
Originally Posted by California98Civic View Post
and the reattached flow at the trailing edge of the decklid.
I'd just say that the car shows excellent attached flow, except for a tiny separation bubble at the centre, base of the rear glass.

Quote:
Originally Posted by California98Civic View Post
The counter rotating trailing vortices from the c-pillars show up: clockwise on the left makes the tufts angle left slightly and counterclockwise on the right makes the tufts angle rightward a little.
Maybe - but that normally shows on the pillars not the trunk (boot) lid - and there doesn't seem to be such flow on the pillars. I'd suggest instead that the flow speed on the sides of the car is faster than on the trunk lid, and the airflow is moving towards this low pressure. Surface panel pressure measurement would prove/disprove this in about 15 min.

I'd love to see some action pics - but if they look like this, I'd say there's very little you can do to improve things in the pictured areas. Honda did a great job.

Edit: compare with the Honda Legend I used to own:


Last edited by JulianEdgar; 05-31-2020 at 05:23 AM..
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