Hi, to get stream tracers  or paths or anything of the sort in ParaView your data needs to be a Vector. You now have separate u,v,w Scalars in the ParaView.

Use the calculator filter and do:

u*ihat+v*jhat+w*khat

Than apply stream tracers to the Calculator filter node

Pozdrawiam,
Stanisław Gepner

15 maj 2019 22:32 zxiong@sas.upenn.edu napisał(a):

Dear all,

I use nektar++ to do a simulation and visualize the result in Paraview. The simulation domain is a 3D cylinder and it computes velocity in three directions(x,y,z-axis) and pressure of blood flow. 

However, I can't use stream tracer filter in Paraview. I read the tutorial of Paraview and can successfully use stream tracer on data inside Paraview. Do I need to compute something else to enable the function stream tracer filter of Paraview? Is there any suggestion？

Many thanks!

Best,

Zhen