Hello every body,
for my final year thesis I designed a car body which I now have to analyse in terms of aerodynamic aspects.
To not neglect the "ground effect" I put my vehilce on a flat plate plate 4m x 6m x 1mm.
My computational domain does not include the whole street but "cuts" trough it and goes a few mm below the bottom of the plate.
I also added "real wall"boundary conditions to the plate making it move the opposite direction of the vehicle travel direction.
I wonder now if the plate is part of the lift and drag analysis of the car or not, I obviously want the road to be excluded!
I made a few simple experiments with a cylinder and a plate, but still can't seem to figure out if the plate is part of it or not:
just the cylinder
drag: -573 (direction of travel is +)
plate and cylinder
lift: -35 (downforce)
plate in motion and cylinder
HELP is very welcome!
Have a great Sunday!