How to Solve a 1D Heat Analysis Problem for an Electric Generator?

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To solve the 1D heat analysis problem for an electric generator, consider the unique cooling setup involving both water and air. The stator, made of insulated copper, is cooled from one side by water, while the rotor, composed of magnets and an iron frame, has air blown through the gap. The equations of conduction with thermal energy generation are applicable, but the challenge lies in adapting them for a dual-sided cooling system. It is essential to account for the heat transfer contributions from both cooling methods in your calculations. A thorough understanding of boundary conditions and the thermal properties of the materials involved will be crucial for an accurate analysis.
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Hello,

I am trying to solve a 1D heat analysis problem for an electric generator.
The stator or the device icludes the copper which is well insulated and is cooled from the left using water running through a pipe. The rotor is made of magnets supported by an iron frame. Cooling air is blown through the narrow gap between the rotor and stator.

I am using the equations of conduction with thermal energy generation to solve this problem. However, all the exampes in books show problems with only the one side of the device to be cooled.
Any suggestion on how i should work on that?
 
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Here is the schematic diagram of the generator
 

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