[Fried]

Hallo everyone,
I have to say I am quite new with using OpenFOAM.
I would like to impose a velocity boundary condition with a fixed value for two velocity components and a normal derivative for the remaining component, e.g.:
(u=const. dv/dn=assigned w=const.)
To me, the mixed type bc looked the right choice - or maybe the directionMixed, depends if I can give a different valuefraction for every component), but I am not able to find out anywhere how to specify it.
Is there anyone who can tell me the right assignment template?
Something like:
{
type mixed
refValue ...
reg gradient ...
...
}
Thanks in advance,
F.