I created this part using SolidWorks. At first, I drew a rectangle and made a square-shaped hole. Then I drew two more rectangles on the opposite faces of the previous rectangle.
I am trying to see the temperature distribution of a rectangular section having an internal hole. The surface of the hole is at a fixed temperature and the outer surfaces of the section have convection boundary conditions. when I am placing the whole in the middle of the section, the heat is not...