transformer model

Hi everyone,

I am very new to COMSOL, thats why I ask for so basic things. I am going to do simply transformer model with radiation. Firstly I did the model in Inventor. But i have many errors during meshing. My question is whether my model is done wrong or i should not mesh it automatically but in another way?

Second question what type of physics should I use? My idea is to set the temperature of core then set parameters of materials and oil and and notice the temperature distribution in oil? Is that possible at all?

It it had work out, then I would add radiation system to my model.

Please, help:)

Best regards