Learning Forum

[tslv27]

Hello, I am new to fluent and am following the steps to Unsteady Compressible flow in Nozzle tutorial problem. I came across the Gradient Adaption step for better capturing of shock in the tutorial documentation. Earlier versions, I suppose, had the Adapt/Mark cells option under Adapt section in Domain menu. But I cannot find the same in Ansys 2019 R2 version.

Similar case for Surface Monitors option.

I would appreciate if you could lead me to the option in the fluent 19 GUI.

Thanks in advance!

[Rob]

You need to create a register first: it's just a slightly different panel set-up. Just click on "More" and look through all the panels/buttons. 

Monitors have moved to make them more useful: it's a little clunky first time through but has many more tools available. Look in the tree under "Report Definitions" work from there. You define a report and then have the option to monitor/plot/save plots of that report. 

[JD_JN]

In case if someone is still struggling with this, here's how you do Gradient Adaption in Fluent 2019:

Create 1 or more register(s) by following steps 2 & 3
Go to Domain -> Adapt -> Refine/Coarsen
In the 'Adaption Controls' dialog box, click on "Cell Registers" -> New -> Select the type of register you want to have and follow the required steps
Now go back to Domain -> Adapt -> Refine/Coarsen -> Cell Registers -> New -> Field Variable
Under the "Derivative Option", Choose 'Gradient'
Select the type of field variable you want. e.g.: Pressure, Static Pressure
Click 'compute' to see the Max and Min values of the field variable you selected
Choose the type of refinement threshold in "Type". e.g. Cells More Than
If you chose say, 'Cells More Than', provide the threshold value in the 'Cells having value more than' box
Give it a name and now click 'Save/Display' to see the cells that meet the criterion, and then hit 'Save' if you are satisfied. Then hit 'Close'
In the 'Adaption Controls' dialog box, in the "Refinement Criterion", from the drop down choose the gradient refinement criteria you just made
Then hit 'Ok' to mark or hit 'Adapt' to adapt the cells

You can follow similar steps for coarsening the mesh as well.

I hope this has helped someone.