From the first session, my results showed the pressure forces on the two designs to be essentially equal. Since I didn’t expect that, I thought I must have used the same wing model, so I carefully re-ran the mesh and model getting essentially the same results.
My questions are:
- The pressure forces seem to be equal for both wings. Why?
- Is it because both wing designs are in a stall or near stall condition, so the high down-force wing is very little different from the standard wing?
Comparison chart, from second run:
FORMULA CAR FRONT WING DATA
Standard Px Pz Py
Flap 25.55 -25.80
Wing 9.00 -94.25 -8.15
High Down Force
Flap 25.57 -25.85
Wing 9.02 -94.16 -8.14
Original run: https://www.simscale.com/workbench?publiclink=4ee6ed90-70df-4b1a-aee3-c57ecf51de70
Second run: https://www.simscale.com/workbench?publiclink=24332b99-6fdc-4278-8e2a-eea267dee93f
- One other item: is the viscous force the drag? If not, what is the significance of the viscous force x?
i know the similarity may be academic at this point, but it still makes me wonder why. Can anyone explain it?