Step 3: Specify Boundary Types in GAMBIT
We'll label the boundary ABCDE as farfield, EF as wedge and AF as symmetry. Recall that these will be the names that show up under boundary zones when the mesh is read into FLUENT.
We'll create groups of edges and then create boundary entities from these groups.
First, we will group AB, BC, CD and DE together.
Operation Toolpad > Geometry Command Button > Group Command Button > Create Group
Select Edges and enter farfield for Label, which is the name of the group. Select the edges AB, BC, CD and DE.
Note that GAMBIT adds the edge to the list as it is selected in the GUI.
In the transcript window, you will see the message "Created group: farfield".
Similarly, create the other two groups. You should have created a total of three groups:
Edges in Group
Define Boundary Types
Now that we have grouped each of the edges into the desired groups, we can assign appropriate boundary types to these groups.
Operation Toolpad > Zones Command Button > Specify Boundary Types
Under Entity, select Groups.
Click on the wedge surface. Next to Name:, enter
wedge. Leave the Type as WALL.
In the Transcript Window, you will see a message saying "Created Boundary entity: wedge".
Similarly, create boundary entities corresponding to farfield and symmetry groups. Set Type the to Pressure Farfield and symmetry in each case.
Save Your Work
Main Menu > File > Save
Main Menu > File > Export > Mesh...
Save the file as
Make sure that the Export 2d Mesh option is selected.
Check to make sure that the file is created.
Go to Step 4: Setup (Physics)