Setting up Forces and moments

Project Support
1

Dera Ladies and Gentleman,

I wanted to simulate my project on a simple designed car and after doing so it said to me in the Force Plot some strange numbers. And my question right now would be what I did wrong and how I could improve it.

I created a simulation, added the Forces and moments and placed the circle on the back of it. After that I deleted the cube itself where the Project is inside from it and clicked done.

I don´t understand why I suddenly have such funny numbers because when I simulated it without the car I got numbers that made more sense for example 200N or 1.5Kn

I also want to mention that the car itself isn´t true to scale and is just for me the visually see if the effect I thought about is happening or not. The Link to the project would be,

Simulation results

3

Hi,

The flow domain is excessively small in your project, which is going to create ‘interferences’ from the boundary conditions onto the region of interest. I’d suggest reviewing this tutorial for common workflows https://www.simscale.com/docs/tutorials/aerodynamic-simulation-vehicle/ (e.g. section 1.2).