distance from the wall to the first grid point
I am simulating mass transfer in boundary layer.
I am wondering whether it is possible to use the values of variables in the first grid point next to the wall in CFX-Pre. For example, I know the mass transfer coefficient can be expressed as a function of the distance from the wall to the first grid point and the concentration at that point. I've defined the mass transfer coefficient as an additional variable, but get stuck because I do not know how to express variables in a specific cell (i.e. the first grid next to the wall in my case) in CFX-Pre.
Thanks in advance.
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