The classic aerofoil example. I never had to do that at Uni as cartesian hex meshes tended not to capture the curves very well....
What are you trying to prove with the model? Ie is it an MEng project or something else? How is heat added to the outer casing? The two pistons can be moved at (time varying) fixed speeds which would take the incylinder workflow (layering remeshing) with a profile for the piston speed. I would get colleagues to do some of this as I cover mutliphase and some of the weird stuff as a specialist but tend to avoid any moving or deforming mesh.
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