Reply To: A B.C. that can specify both the normal velocity and species mass fraction

[Essence]

 

Hello,

First of all you do not need to apply velocity udf or velocity profile as a boundary condition at wall 2. The pressure outlet condition is sufficient. Another thing is about the species concentration, you can provide the species boundary condition at inlet itself. Now, choose the porous media such that it is permeable only to the species you want it to be (this can be done in the Fluent settings). Therefore, you will get the species concentration data wherever you want in the domain. You might find more information here: https://ansyshelp.ansys.com/Views/Secured/corp/v231/en/flu_ug/flu_ug_bcs_sec_cell_zones.html?q=porous%20media

https://ansyshelp.ansys.com/Views/Secured/corp/v231/en/flu_ug/tgd_user_workflow_guided_tasks_create_porous_regions.html?q=porous%20media

https://ansyshelp.ansys.com/Views/Secured/corp/v231/en/flu_tg/flu_tg_tut_catalytic_converter.html?q=porous%20media

Please let me know if this helps.