Learning Forum

[JustinCHAN]

I have named some boundary in mesh but I can't see the option of the boundary condition. I want to seek help.

[Nikhil Narale]

Hello,

It looks like you have assigned the Named Selections but haven't updated the Mesh and the Fluent tasks in the workbench workflow. Try doing the following:
1: After assigning Named Selection, update the mesh task.
2: If the Fluent is opened, you will notice a green refresh button at the top left of the Fluent window. Click on it to refresh. Now you can the see the labels, that you have defined, in the boundary conditions.

I hope this helps.

Nikhil

[JustinCHAN]

Thanks for your help but now I cant select open channel flow, unlike R18.2 version. Can you teach me how to do it?

[Nikhil Narale]

Hello,

You have to toggle the option in the 'Multiphase Model' settings under the VOF Sub-Models. Once you turn on the option from 'Multiphase Model' settings, 'Open Channel Wave BC' option will appear in the Boundary Conditions.

Nikhil

[JustinCHAN]

Thank you again @nnarale, but still I am stuck on the step here.
I cannot set up the wave condition like R18.2 does. The "Wave group inputs" haven't pop-up when I select Multiphase in velocity inlet.

[Rob]

What value did you add for gravity?

[JustinCHAN]

-9.81 m/s in Y axis

[Nikhil Narale]

Hello,

Please make sure that you have toggled on the 'Transient' option in General -> Time.
Let me know if this works.

Nikhil