Motor rotor temperature rise simulation method

The invention relates to the technical field of motor rotor simulation, and particularly discloses a motor rotor temperature rise simulation method which comprises the following steps: constructing a rotor model which is internally provided with a cooling oil duct; a heat dissipation model is constructed, the heat dissipation model comprises an internal heat dissipation model, the internal heat dissipation model is arranged in the cooling oil duct, and heat transfer characteristic assignment is conducted on the internal heat dissipation model; the external heat dissipation model covers the rotor model and performs heat transfer characteristic assignment on the external heat dissipation model, the external heat dissipation model comprises an air gap model which covers the peripheral surface of the rotor model, and a heat exchange interface is arranged between the air gap model and the internal heat dissipation model; the inner cavity model covers the outer sides of the air gap model and the rotor model; and ca