Make the Scalar Scene 1 display active to see the Mach number results for the finished solution.
By default, Filled cell values are shown. To make the display smoother, select the Scalar 1 node.
In the Properties window, set the Contour Style property to 
(Smooth Filled).
The contours of the scalar display now appear smooth.
You will now display two scalar values at the same time: one on the symmetry plane, the other on the inner wall. To do this, add another scalar displayer by right-clicking on the Displayers node and selecting New Displayer > Scalar.
The creation of the second displayer has added a second scalar bar in the display. To view both scalar bars easily, point the mouse in the interior of a scalar bar to drag either one of them to a different location.
In the display, right-click on the scalar bar (blue) of the new displayer and select Pressure.
Right-click on the inner wall in the display and select Displayers, and open its submenu. Among the checkboxes to the right of in, clear the checkbox under Scalar 1 and tick the one under Scalar 2.
This single step transfers the part from one displayer to another.
Open the Scenes, Scalar Scene 1 and Displayers nodes, then select the Scalar 2 node.
Set the Contour Style property to (Smooth Filled). Set the Transform expert property to Symmetry_plane2 1.
The blunt body shows pressure values while the symmetry plane shows Mach number.
Save the simulation.