Quote:
Originally Posted by Vman455
The combination of your parents' commentary and cinematography is hilarious, especially that last video.
That said, the shakiness and quick shots make it hard to glean anything useful. I can't make out anything around the ducts at all, but I did notice from some angles it looks like the flow coming over the diffuser may be separating before reaching the edge.
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I haven't watched the videos yet.
Whuups. I didn't think to mute them.
On my return trip, I was able to observe the behaviour of the tufts in my rear view mirror.
I added a quick piece of cardboard to one side of the duct, and had it angled downward at a steep slope.
I added a VG.
Despite the curve, flow is quite good back there as it comes off the NACA duct.
Airflow looks to be just as good as that from the edge of the top portion of the extension.
On the other side, I added sawtooth VGs.
Flow was not as good, and I could see the pattern of swirling air on the tufts below it.
The tufts swirled to the center of the car, while the duct with the large VG on the drivers side had very little motion to the tufts below it.
I'll see if I can get video from inside the car later this week.
Regarding the diffuser, there certainly is sepetation. I don't have any panels installed underneath yet.
That was one of the things I had hoped to get done on the trip, but oh well.