I created a new simulation project called 'fp-023d - Rear Bodywork'
CFD Simulations of fp-023d Rear Bodywork
More of my public projects can be found here.
fp-023d - Rear Bodywork Study
This study is based on Fp-023c - Front Aero Device Study .
- Forum Page : Fp-023c - Front Aero Device Study
- Project Page : SimScale
- GitHub Page : GitHub - y-yosuke/formula-ppoino: A side-by-side two-seater car of the early 2000s formula style
Contents
- Simulations
- Diffuser
- Diffuser End 20mm Higher
- Diffuser Vertical Fin
- Rr Bumper B
- Rr Bonnet Horizontal Vane
- Side Mirror
- Side Mirrorless
- Side Mirror - 30mm Higher and 20mm Outer
- Rr Wing
- Rr Wing - 1 Piece 50mm Higher
- Rr Wing - 1 Piece and 2 Pieces
- Rr Wing Flap Angle
- Rr Wing 2 Pieces and Lower Front Ride Height
- Diffuser
- Summary
Diffuser
Diffuser End 20mm Higher
Diffuser End 20mm Higher (N=1200) / Control : Rr Fender for Tire Stroke (N=1200)
Body and Wheels
Body Only
- Diffuser End 20mm Higher
- Front and rear downforces increase without increase of drag
- Improvement of L/D
- Front and rear downforces increase without increase of drag
Diffuser End 20mm Higher - Pressure Comparison
Pressure Underbody
Pressure Underbody - Zoom to Floor
Pressure Underbody - Diffuser Bottom View
Diffuser Vertical Fin
Diffuser Vertical Fin / Control : Diffuser End 20mm Higher (Diffuser Vertical Fin - None)
Body and Wheels
Body Only
‘Diffuser Vertical Fin - None’ is the best. These vertical fins decrease the downforces.
Diffuser Vertical Fin - None / Flow and Pressure Comparison
Bottom View
- It seems the fin is interfering with the flow a little.
Rear View
Pressure - Bottom View
1 Like
Rr Bumper B
Rr Bumper B / Control : Diffuser End 20mm Higher (N=1200)
Body and Wheels
Body Only
- ‘Rr Bumper B’ slightly increases front downforce and decreases rear downforce.
- These changes of downforces are small and not deterministic.
- The drag is almost the same.
1 Like
Rr Bonnet Horizontal Vane
Rr Bonnet Horizontal Vane / Control : Rr Bumper B
Body and Wheels
Body Only
- ‘Rr Bonnet Horizontal Vane’ slightly increases front downforce and decreases rear downforce.
- These changes of downforces are small and not deterministic.
- The drag is almost the same.
1 Like
Side Mirror
Side Mirrorless
Side Mirrorless / Control : Rr Bonnet Horizontal Vane
Body and Wheels
Body Only
- ‘Side Mirror’ decreases the front downforce or increases the front lift force.
- The drags and the rear downforce are similar between ‘Side Mirrorless’ and ‘Original Side Mirror’.
1 Like
Side Mirrorless - Flow and Pressure Comparison
- It seems that the side mirror is bending the flow downward and generating lift force.
Pressure Comparison
1 Like
Side Mirror - 30mm Higher and 20mm Outer
Change of the side mirror position for higer rear wings
Side Mirror - 30mm Higher and 20mm Outer
/ Control : Rr Bonnet Horizontal Vane (Side Mirror Origin)
Body and Wheels
Body Only
- ‘Side Mirror - 30mm Higher and 20mm Outer’ decreases the front and rear downforce. But the differnces are not enough large for difinite.
- The drags are almost the same.
1 Like
1 Like
Rr Wing
Rr Wing - 1 Piece 50mm Higher
Rr Wing 1pc 50mm Higher / Control : Side Mirror - 30mm Higher & 20mm Outer
Body and Wheels
Body Only
- ‘50mm Higher Rr Wing’ increases the rear downforce and decreases the front downforce.
- ‘50mm Higher Rr Wing’ increases the drag slightly.
1 Like
Rr Wing - 1 Piece 50mm Higher - Flow and Pressure Comparison
Pressure Comparison - Top View
Pressure Comparison - Bottom View
Pressure Comparison - Rear View
1 Like
Rr Wing - 1 Piece and 2 Pieces
- 2 pcs Control : Rr Wing Main 1.4 Flap 1.3 32.7deg
- 2 pcs -5 deg : Rr Wing -5deg / Main 1.4 Flap 1.3
- 2 pcs -10 deg : Rr Wing -10deg / Main 1.4 Flap 1.3
- 1 pc Z+50mm : Rr Wing 1pc 50mm Higher
Body and Wheels
Body Only
1 Like
