Forces acting on a mesh body / Moving the mesh

Submitted by dmaionchi on Wed, 07/20/2011 - 09:44

Hi,

I'm new here and would like to ask two things that I need for my project. I would like to be sure if this is possible using this software.

- If I have for example water falling in a box, can I get the forces and torques acting on this body (the mesh) due to the fluid?
- May I change the states of the body (position, velocity, orientation, angular velocity) based on the forces and torques?

Thanks in advance for the help! Danmiela

Forums:

dmaionchi | Wed, 07/20/2011 - 14:52

Hi Chris,

I saw the project about fsi in openfoam. As I understood, this coupling is useful if I am dealing with elastic bodies, isn't it?
In my case, I am not working with elastic body, I just want to able to move the body depending on the forces acting on it due to the fluid (and possibly due to the particles if I have a problem involving both fluid and particles).
Is this implemented in the CFDEM Code?

I can give another example: if I want to simulate the movement of a mill due to the water, would it be possible to calculate the forces acting on the mill? If yes, I would implement a script that calculates the new position of the mill (in the case the rotation and angular velocity) and would like to change/use the new values in the model. Then again I would like to obtain the forces acting in this new configuration and so on...

Thansk again for the help.
Daniela

cgoniva's picture

cgoniva | Wed, 07/20/2011 - 16:11

Hi Daniela,

What you might want is the moving mesh (and GGI sliding interfaces) functionality of OpenFOAM(R).
You will find information in the cfdonline forum (http://www.cfd-online.com/Forums/openfoam/).

Once particles come into play you can couple that solver with a DEM code (liggghts) using the CFDEM framework.

Cheers,
Chris