need a 3D modeling of heat and mass transfer comsol example

Comsol has an example of heating chicken patties in convetion oven. inspecting the moisture and temperature distribution of the patties. Now, I am trying to make a 3D spherical chicken patties. at last, I can get a good moisture distribution, but we I cut the sphere in to a plate, there is no temperature gradient. Could some one share me a 3D heat and mass transfer Comsol example? thank you !