Ansys Employee
Yes best to do with a UDF which will add source term in the first layer of cells near the wall. Or you separate the first layer at the wall and use directly sources terms in the GUI.nProviding the mass fraction at wall is just a boundary condition for mass fraction at the wall.nAlternative is to use a profile for mass fraction as UDF. Assume the governing equation is D??m/?y+J?m=0. D, J are known. Here you can provide m (being mass fraction) as sort of solution of that equation.nnA lot of ways..n