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Flow enters the rotor of an LP axial flow compressor with an absolute velocity of 150m/s purely in the axial direction. The LP shaft rotates at 8600rpm and the compressor is designed to have a constant axial velocity throughout. The angle of the relative velocity at exit of the rotor is 30 degrees to the axial direction.

Flow enters the rotor of an LP axial flow compressor with an absolute velocity of 150m/s purely in the axial direction. The LP shaft rotates at 8600rpm and the compressor is designed to have a constant axial velocity throughout. The angle of the relative velocity at exit of the rotor is 30 degrees to the axial direction.

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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this example, how do you know that the relative velocity is going downwards and not upwards
Flow enters the rotor of an LP axial flow compressor with an absolute velocity of 150m/s purely in the axial direction. The LP shaft rotates at 8600rpm and the compressor is designed to have a constant axial velocity throughout. The angle of the relative velocity at exit of the rotor is 30 degrees to the axial direction. At mid-blade height, where the diameter of the compressor is constant at 0.4m, calculate: a) The relative entry angle of the flow with respect to the axial direction. (Answer=-50.2°) b) The absolute exit angle with respect to the axial direction. (Answer=60.6°)
Transcribed Image Text:Flow enters the rotor of an LP axial flow compressor with an absolute velocity of 150m/s purely in the axial direction. The LP shaft rotates at 8600rpm and the compressor is designed to have a constant axial velocity throughout. The angle of the relative velocity at exit of the rotor is 30 degrees to the axial direction. At mid-blade height, where the diameter of the compressor is constant at 0.4m, calculate: a) The relative entry angle of the flow with respect to the axial direction. (Answer=-50.2°) b) The absolute exit angle with respect to the axial direction. (Answer=60.6°)
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