Duhamel's theorem is used to integrate an analytical slab solution with a nodal solution to utilize the advantages of each method. The analytical part of the model provides a detailed temperature distribution through the rotor rims which is used to estimate the rim thermal stresses. Experimental results are used to derive a model of the vent cooling. Brake dynamometer tests are compared to the calculated results to verify the model. Some examples of parameter variations are given that show typical model capabilities.
