Quote:
Originally Posted by trebuchet03
Next in the pipe - Flat Deck Extension
- Boudnary Layer Trip
- Streamlined Foil
Still taking requests. |
Awesome! Thank you for doing this! This thread is rad.
I want to build my deck lid extension soon, and can't decide on whether to stay with the trunk line or bend it up to extend flat behind the car. I would think that staying with the declining angle of the trunk would be best, IF the flow remains attached. Hence some VG's on the roof to trip the flow.
Also much easier to manufacture, thinking just a flat plate of aluminum or maybe plastic (whatever's cheaper, ha.). With the VHB you speak of for attachment (where does one find industrial grade VHB tape?).
Where are you going to locate your "trip" in the model? I would think just before the roof line starts to bend downwards would be most beneficial...?
What do you mean by streamlined foil? A raw shape to test? (i.e. not something done to the jetta?)
Questions about your model:
- How did you obtain the geometry to build it? - It looks great btw. I would LOVE a copy once its all cleaned up!
- Did you model the curvature in the 3rd dimension? Specifically the gentle arc across the trunklid rear edge:
So you are running all these CFD simulations. What output are you getting other than a visual flow separation analysis for each iteration? Can you compute a Cd number of some kind also?
Seriously though, its rare find a study being done like this, with open data sharing, let alone for my own car... Sweet!