I am actually involved in producing some movies for some simulations that I performed with PyFR. I was wondering if there is an easy way in which I can visualize the geometry of the solid object around which the flow is moving using the ParaView software. For example, how the cylinder in Fig. 19 or the airfoil in Fig. 32 of Vermeire et al. (2017) was added?
For the cylinder I think that we simply added it using a filter in ParaView. For more complicated geometries we typically export the body as a .stl file which ParaView can read. Most CAD applications should be able to generate an STL.
Thank you @fdw and @WillT for your advice. I confirm that I managed to export the surface of the solid from Pointwise as a .stl that I am able to open with Paraview.