Update only example.

Author: prmukherj

examples/00-post_processing/post_processing.py

@@ -205,11 +205,9 @@
 # ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 # Create a temperature contour on the mid-plane and the outlet.
 
-# temperature_contour = Contour(
-#     solver=solver_session,
-#     field="temperature",
-#     surfaces=[surf_mid_plane_x.name, surf_outlet_plane.name],
-# )
+temperature_contour = Contour(solver=solver_session)
+temperature_contour.field = "temperature"
+temperature_contour.surfaces = [surf_mid_plane_x.name, surf_outlet_plane.name]
 graphics_window.add_graphics(mesh, position=(0, 1))
 
 ###############################################################################
@@ -239,7 +237,7 @@
 
 velocity_vector = Vector(
     solver=solver_session,
-    field="velocity",
+    field="x-velocity",
     # color_by="x-velocity",
     surfaces=["solid_up:1:830"],
     scale=20,