Learning Forum

[Laura Pałys]

Hello, does anyone know how to get the results for the entire volume domain automatically generated by ICFD? I need to calculate the shear stresses. For this purpose, I need information about the velocity gradients or shear rate. How to generate this information for each time step?

I will be grateful for every information.

Best,

Laura

[Reno Genest]

Hello Laura,

It is usually better to visualize the results on a section of the volume instead of the full volume.

You can output the shear as follows:

 

An alternative is to output the drag using *ICFD_DATABASE_DRAG. See the user manual for more information.

 

Let me know if this answers your question on not.

 

Reno.

 

 

 

[Laura Pałys]

Hello, Reno

I agree that sometimes it's better to visualize results only for individual sections. In my case, I need this information to use them to calculate other flow equations. Therefore, I need this information in the form of an external file to be able to perform calculations on it.

Best,

Laura

[Reno Genest]

Hello Laura,

Have you tried *ICFD_DATABASE_DRAG? See the user manual Vol III for more information. This keyword creates a text file output for the drag force.

 

Reno.

[Laura Pałys]

The best solution is to calculate the shear stresses in Ensight or Paraview. The topic can be closed.

[Reno Genest]

Hello Laura,

Thank you for letting me know. I saw that my colleague asked the developer for advice on this. Here is the post for the benefit of other users:

https://forum.ansys.com/forums/topic/viscous-drag-force-into-shear-stress-value/

 

Have a good day!

 

Reno.