Coordinate systems: From 2D axial symmetry to 3D

Hey,

I encountered a problem when modeling heating of a 3D copper cylinder in 2D axial symmetry. I tried to do an Arrow line plot in 3D over "total heat flux" but the arrows appearing are not physically correct, since it by default plots:
{x,y,z}={ht.tfluxr, ht.tfluxphi, ht.tfluxz}. Meaning that what I plot is radial component of heat flux in x. How can I go around this problem without making a 3D model? I tried using {x,y,z}={ht.tfluxx, ht.tfluxy, ht.tfluxz} as if I did it in 3D but it does not work.

Thanks

Petter

cylindrical coordinates cartesian