Hello,
I need to use a surface traction term, because I want to apply a pressure
dirichlet boundary condition at the inlet for channel flow. In the SfePy
term overview page, I can see the term dw_surface_ltr. In my weak form for
the Navier Stokes equations, I will need two such terms. One for the stress
tensor and one for the pressure. I got the pressure term using the
dw_surface_ndot term. I do not understand how to represent the
viscosity*vel_test_func.grad(velocity).n term.
Best regards,
Nikhil