Hi Andrei,

On 13/08/2018 16:47, AC wrote:
I am trying to define some velocity profiles in [soln-ics]  using the expressions below. I think that it doesn't pass the 'if' and 'else' statements to the solver.
Do you have some suggestions please? Any help would be much appreciated.
You can accomplish this by using an expression with a hyperbolic tangent (tanh) function. This provides a smooth means of transitioning between one function and another.

Regards, Freddie.

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