Using the VectorNeumannBC

[TLWise]

I am attempting to use the VectorNeumannBC with the vector velocity. I get the following error:
No standard variable named velocity found. Did you specify a vector variable when you meant to specify a standard variable?

Is it possible to use VectorNeumannBC with the NS variable velocity?

[GiudGiud]

Which NS? INSAD or INSFE?

VectorNeumannBC is actually not for vector variables
For NS applications you ll have more specific BCs

[TLWise]

@GiudGiud INSAD. I'm looking the implement the Directional Do Nothing BC.

[maxnezdyur]

You want to look at ADVectorFunctionNeumannBC. This bit me before too!