[osvaldo_gar]

Hello everyone

I have a tube 3D with the face of inlet is divided in 2 faces because i need for the inicial of simualtion both faces be velocity inlet but after 10 seconds change the boundary contions for 1 face to be a wall no slip

Could you help me give me an idea of the macro I should use?

[bloodflow]

Originally Posted by osvaldo_gar

Hello everyone

I have a tube 3D with the face of inlet is divided in 2 faces because i need for the inicial of simualtion both faces be velocity inlet but after 10 seconds change the boundary contions for 1 face to be a wall no slip

Could you help me give me an idea of the macro I should use?

This doesn't need a UDF, you can do this manually if running the simulation using the GUI, or use the TUI commands to change the boundary type from velocity -inlet to a wall.