I tried solving the problem with and without specifying the wall mass fraction. When I provide mass fraction at the walls, it seems there is no effect of convection. Image one is with wall mass fraction and image 2 is without mass fraction.nI am looking to model some thing like this -
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.nI also need to include more complex geometry, this is just a starting point. I am not sure if I can use the source term on a layer of cells as my final geometry has very thin cross sections where only one cell (I use quadratic elements to negate this) with present at the wall.n