16.8.2 Diffusion at Inlets

In some cases, you may wish to include the diffusive transport of mixture fraction through the inlets of your domain. You can do this by enabling inlet mixture-fraction diffusion. By default, ANSYS FLUENT excludes the diffusion flux of mixture fraction at inlets. To enable inlet diffusion, use either the

define/models/species/inlet-diffusion? text command, or the Species Model dialog box

Models Species Edit

and enable the Inlet Diffusion option.