Ansys Assistant will be unavailable on the Learning Forum starting January 30. An upgraded version is coming soon. We apologize for any inconvenience and appreciate your patience. Stay tuned for updates.

Ansys Learning Forum Forums Discuss Simulation Fluids Want to know how to set a specific concentration in an area Reply To: Want to know how to set a specific concentration in an area

Rob
Forum Moderator

Nano-scale will be pushing the solver as it's not designed to work at that scale - you may want to read up on the continuum assumption and Knudsen Number limits. 

Do directly answer the question, the word you're looking for is "Patch". 

[bingo_chatbox]