I have been spending quite some time whilst attempting to simulate this vehicle. The drag coefficients do not match with other results and neither do the drag forces. Any help with the simulation set up would be great. All environments in other simulation software are identical to the environment I have created on Simscale.
*Trying to calculate a drag coefficient
Hello rdunnings,
one thing i found in your simulation is, that your mesh is pretty coarse, can you please go ahead and try finer meshes. especially refine the areas around the wings and body of the Simulations.
In addition to this, i have created Surface Refinements for the car.
Small edges of wings and Bodywork: Min length 1.25e-4 m Max length 2.5e-4m
Tire Surfaces and gab between Tire Cover and Tire: Min length 1.25e-4 m Max length 2.5e-4m
Big Bodywork parts: Min length 2.5e-4 m Max length 5e-4m
The result i got was 0.22 for the drag coefficient. I guess that a bit more refinement need to be done but I guess that this is a good starting point.
You can find out more about mesh refinements here:
Last thing I did was a bit more specialized:
I reduced the relaxation factor for the simulation velocity to 0.3 .
You can find the setting under Nummerics:
This just means that the simulation will run i bit smoother but will take longer to converge. therefore I would increase the maximum iterations to 1500-2000.
I hope that helps you to get closer to your results.
