Learning Forum

[Ananth Narayan]

Hello all, is there any possible ways to translate a solid body in fluid domain with a particular velocity without using UDF. I tried using mesh and frame motion but I end with un-successful attempts.

In post processing, one sphere remains stagent and other copy of it moves with defined velocity. How to resolve it.

Thanks in advance.

[Rob]

Sliding mesh or dynamic mesh can be used: the motion can be defined as a simple velocity or a profile/expression. Both are covered in tutorials/videos, click on Help in Fluent and work your way through the page(s). n

[Ananth Narayan]

Can I get similar effect using mesh motion and frame motion. And actually can you brief me what these 2 options do. In the above image, I simulated with mesh motion but the copy of circle moves not the original circle which is actually I want.n

[Rob]

Have a look in the tutorials, the mixing tank one covers the rotational approach. nIn your model you've moved a separate volume that's not connected. You need to move the hole not the solid you put there. n

[Ananth Narayan]

Ok sir, but with the above said mesh motion techniques works better for this simple translation cases??n

[Rob]

Sliding can work, or layering (moving deforming mesh) but the latter will be a little slower. n