Background: The drum motor is a motorized pulley. All the components necessary to drive the motor, such as the motor, gearbox, and associated mechanical components are all enclosed in an oil bath within the rotating pulley . This particular series of motor is to be used in the aggregate processing industry.

Due to the nature of the product, engineering challenges are present such as maximizing the motor's ability in heat dissipation. This totally enclosed non ventilated motor (TENV) requires substantial thermal design in the absence of fan cooling as it delivers upto 200 HP of continuous duty power. 

For the client, the following parameters were of severe importance:
-Maximum Motor Winding Temperature

-Oil Temperature

-Bearing Temperatures

-Pressure Drop across the internal plumbing system

-Maximum hydraulic line length on the suction side

-Oil flow to main bearing

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The following study was a culmination of engineering practice in fluid flow and heat transfer, coupled with high performance multiphysics simulations using ANSYS CFX. Some of the results are shown below:

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