Simulation of air inside motor

Akanksha90 · December 1, 2017, 08:51

Hello all,
I am working on a PM Motor and i am at the stage where i have to check for thermal behaviour of the end windings with the air around it as natural and forced convection condition. I would like to know that how do apply the velocity due to shaft rotation without using the rotating or moving reference frame. I just have to approximate the behaviour that is why i do not want to complicate the model.
Please let me know about the best possible conditions! Thank you

me3840 · December 3, 2017, 02:41

The windings don't turn, just the shaft, correct? Sounds like you just need a wall velocity BC.

Akanksha90 · December 19, 2017, 07:20

Hello me3840 ,
thank you i tried with the tangential velocity in region using the rotation rate.

December 1, 2017, 08:51	Simulation of air inside motor	#1
Akanksha90 New Member Akanksha Rawat Join Date: Apr 2014 Posts: 29 Rep Power: 12	Hello all, I am working on a PM Motor and i am at the stage where i have to check for thermal behaviour of the end windings with the air around it as natural and forced convection condition. I would like to know that how do apply the velocity due to shaft rotation without using the rotating or moving reference frame. I just have to approximate the behaviour that is why i do not want to complicate the model. Please let me know about the best possible conditions! Thank you

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December 3, 2017, 02:41		#2
me3840 Senior Member Join Date: Nov 2010 Location: USA Posts: 1,232 Rep Power: 25	The windings don't turn, just the shaft, correct? Sounds like you just need a wall velocity BC.

December 19, 2017, 07:20		#3
Akanksha90 New Member Akanksha Rawat Join Date: Apr 2014 Posts: 29 Rep Power: 12	Hello me3840 , thank you i tried with the tangential velocity in region using the rotation rate.