Initiate the meshing process by clicking on Mesh in the workflow.
Set Mesh Boundary Layer
In the Boundary Layer Settings, under Collision avoidance, select Layer compression.
AIM will prompt you to fix the Boundary Layer before generating the mesh. Click on Boundary Layer under Mesh Controls. Select every face except for the inlet and outlet faces (133 faces total).
Return to the Mesh panel, then click Generate Mesh under Output or at the top of the screen by the status window for Mesh. AIM will detect that you are ready to generate the mesh and highlight the buttons in blue.