Hi,
In 2d axis,i have a fluid flow project(laminar flow) and i want to implement a parabolic profile (semi/half parabolic) for inlet velocity. I express it at the inlet b.c.
as: umax(1-r^2/R^2)
where, R is my channel radius-height and r is comsol's distance from r=0 axis.
The problem is that the geometry consists of 2 domains (one fluid,one solid/ see the image,blue is inlet) and so r extends till the solid making the parabolic expression wrong.
How should i cope with this problem?
In 2d axis,i have a fluid flow project(laminar flow) and i want to implement a parabolic profile (semi/half parabolic) for inlet velocity. I express it at the inlet b.c.
as: umax(1-r^2/R^2)
where, R is my channel radius-height and r is comsol's distance from r=0 axis.
The problem is that the geometry consists of 2 domains (one fluid,one solid/ see the image,blue is inlet) and so r extends till the solid making the parabolic expression wrong.
How should i cope with this problem?