Learning Forum

[Meri Gjika]

Hi, I have done a simulation in Ansys fluent and want to visualize in the results the stagnation of velocity applying a limit (like the stagnation of velocity<0.005m/s). Also, I want to show the shear rate but even here I do not know how to do so because from the data after the simulation I have only the wall shear stress.

Do you have any recommendations on how I can visualize them? 

[Federico]

Hello, 

when creating countours, you have options in the Contour dialog box to Auto-Range and Clip-to-Range. Turn off Auto Range to set your own range. Turn off Clip-to-Range if you want to hide any values outside of your range.

For shear rate, you can use Strain rate: 41.4. Alphabetical Listing of Field Variables and Their Definitions (ansys.com)

[Meri Gjika]

Hi, thank you for your response.

I solved the countours range. And I understood that I can use strain rate in place of shear rate but I do not understand how to visualize it, because I do not know where to find it in my data, do you have any suggestion?

 

[Federico]

Hello, 

you can find it in the Derivatives group.

[Meri Gjika]

Hi,

I tried to visualize it in contours derivates as you showed me in this screenshot but, in reality, I am using CFD POST for the post-processing so how I visualize the stain rate from Fluent is not exactly what I want to see. I want  something like this:

So the red areas are where the strain rate is lower than 0.1 s^-1. I want to obtain something like this.

[Federico]

You can create cell registers for Field Variable > Strain rate > Value less than 0.1.