In estimating heat transfer in a traction motor, consideration must be given to a rise in air temperature. The authors investigated air flow characteristic with dummy rotors simulating an armature core in which the prototype motor output is 230[kW]. Air hole diameter, hole number, and rotor speed have little effect on pressure loss coefficient. The pressure loss coefficient is ζ = 49Re-0.3 for Reynolds numbers ranging from 104 to 2 × 105.
|Number of pages||10|
|Journal||Waseda Daigaku Rikogaku Kenkyusho Hokoku/Bulletin of Science and Engineering Research Laboratory, Waseda University|
|Publication status||Published - 1988 Dec 1|
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