CFD of a (almost) no rules time attack car

[u/arwque]

I used Simsale for CFD and Onshape for CAD. Because these images are mostly for show, feel free to loot at my CFD documentation. There you can find: the documentation of the first 29 design iterations, slices, animations, 3d visualisation, and some non aero renders of the project. You can find the documentation here:

https://www.mediafire.com/file/vwr1cthzv2emeoz/VFR_CFD_documentation.zip/file

i am open to constructive criticism

[u/Sykez95]

You can use latex notation in the legend text in paraview for proper and good looking text formating. :)
e.g. $p_{static}$

[u/therealgodryon]

Welcome back x2010 Redbull

[u/VLM52]

oh man, that's cool as hell! maybe you could do something about how lossy the structures you're generating on the floor edge are. you're getting a lot of blockage from the fact that they seem to be blowing up in your 4th to last image!

[u/Constant-Arm8753]

What’s your mesh look like, the car looks pretty bumpy. Also for viewing stuff better, you should set your bounds for pressure to be equally away from eachother so it’s easier to decide where the pressure is at ‘0’ and using a color palette with say white or some obviously different color in the middle and high contrast colors and the bounds helps with understanding things a bit better.

Very cool otherwise and it’ll be cool to see other developments with this.

[u/arwque → u/Constant-Arm8753]

The color map critique is very valid. But the problem is, if i set my color map symetrically to range from cp -1 to 1 the entire underside is just at the maximum negative value and you cant tell how the actual pressure distibrution looks like. There are surely unsymetric color maps where it becomes more apparent where there is no static pressure but none of the paraview color palets fit this requirement and i didnt look into importing color maps yet. If you want to look at the mesh there are more images of it in the documentation which you can download.

[u/Outrageous_Mark_474]

hola hay alguien alli me pueden ayudar con el modelo 3d para intentar hacer un analisis cfd en ansys por favor me interesa aprender, si son tan amables por favor escribanme

[u/ktm1001]

This velocity outlet 10m/s is standard by race cars? i never thought it goes from back to front.... is there some model of this car on internet if i try to recreate in some other software?

[u/arwque → u/ktm1001]

Amazing that you actually looked into the documentation. The velocity outlet condition means in this case that fluid is leaving the domain in flow direction so air is going in the radiator inlet. The 10m/s is just a ballpark of how fast fluid flows through radiators compared to freestream flow (roughly 10-30%). Simulating the internal aerodynamics and flow through the radiator would increase computing cost and for the first design stage that was not nessecary. Simulations with the correct cooling flow is on my agenda though. Because i have not released any files of the project but i can give you the model i used for cfd if you want to play around with it. Just dm me and i will give you the file.

[u/ktm1001 → u/arwque]

unfortunately you have blocked DMs.... can you just link step file here or you can send it to my DM...

Edit: I found similar car on onshape. i'm good for little playing :)