[TomDaniels]

Hello everybody,

I'm quiet new in CFX-Analysis and worked my way through the tutorials until now.

For the next step I want to analyse a simple rotation tyre in CFX.

I will present my ideas, maybe you can give me some advise if I'm wrong and help me with the next steps. I would really aopreciate your help!


I modeled a simple zylindrical tyre in CAD. I then made an offset of the surface to get a boundary layer where I can make a fine mesh. As a last step I created a "wind tunnel" over all and substracted the over stuff from this channel.

I then meshed everything. And try to setup the rolling tyre.

The "moving road" was no problem using CFX Pre. But when I tried to set the boundary for the tyre I first could choose the new cood. system on the tyre (around which I wanted to rotate the tyre model) and later I got error messages because I used wrong dimensions. But I guessed rad/s is the right angular velocity.

Am I doing this all wrong? Do I have to use Transient behaviour instead of Steady-State in this case?

I tried to search for this but got not what I'm looking for. I know that I probably can get better results with ICEM but as a first step I just used the CFX-Meshing tool.

Do I have to use a special mesh for my boundary layer around the tyre, or is this layer just useless?


Thank you very much for your help. Once again, I really appreciate it!

Greetings from Copenhagen!

Tom