Plane of symmetry, zero velocity wall and free surface in Polyflow

[Baybora]

What is the "plane of symmetry", "zero velocity wall" and "free surface" terms which I have seen in Polyflow? It says in Vnormal=Fs=0 for plane of symmetry and Vnormal= Vs= 0 for zero velocity Wall. Now I get when Vs=Vn=0 it means that the wall isn't moving and it's in a static state but didnt get what others actually mean in linguistics?

Thanks from now

 

[Greg Bernhardt]

What is Polyflow?

 

[Baybora]

What is Polyflow?

A computational fluid dynamics program

 

[Greg Bernhardt]

A computational fluid dynamics program

Moving to engineering, but this is pretty specific. It might be best to seek their official support.

 

[Chestermiller]

What is the "plane of symmetry", "zero velocity wall" and "free surface" terms which I have seen in Polyflow? It says in Vnormal=Fs=0 for plane of symmetry and Vnormal= Vs= 0 for zero velocity Wall. Now I get when Vs=Vn=0 it means that the wall isn't moving and it's in a static state but didnt get what others actually mean in linguistics?

Thanks from now

A free surface is a fluid surface that is not attached to a rigid wall. It's like the upper surface of the water in a glass of water.
A plane of symmetry is one in which the fluid flow on one side of the plane is the mirror image of the fluid flow on the other side.
A zero velocity wall is one that is not moving.