[donghyuk]

i'm using paraview for post-processing but, i have problems.
I'm studying vertical axis wind turbine and i want to see streamline with vortex.
my free stream velocity is 9.3m/s and angular velocity omega = 74.4rad/s.
I calculate like this for streamline : U - (74.4*coordsX*jHat-74.4*coordsY*iHat)
but the results is like the picture with no vortex

Is this picture is correct picture for airfoil?
or not, How can I fix this situation?

please, give me any answer or thinking.
Thank you