Ansys Learning Forum Forums Discuss Simulation General Mechanical Not able to select edge in a 2D surface and apply convection boundary condition Reply To: Not able to select edge in a 2D surface and apply convection boundary condition

Karthik Remella
Administrator

Hello,


Do you see a question mark in your structure tree? It is because your default problem settings is set to 3D and you have imported a 2D plane into steady state thermal. This confuses the solver because all boundary conditions are applied on surfaces (not on lines) and as soon as you click on convection to select the appropriate boundary, Steady state thermal defaults to the face filter (instead of line because the solver is expecting to solve a 3D problem).


The way to fix this is the set the 'Analysis type' from 3D to 2D. You can do this in WorkBench. Right-click on geometry and open 'Properties'. Here is a screenshot of what it would look like.



I hope this helps.


Best Regards,


Karthik