Growth of Secondary Losses and Vorticity in an Axial Turbine Cascade

The growth of losses, secondary kinetic energy, and streamwise vorticity have been studied in a high turning rotor cascade. Negative vorticity associated with the passage vortex agreed well with predictions of classical secondary flow theory in the early part of the blade passage. However, toward th...

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Published in:Journal of turbomachinery 1988-01, Vol.110 (1), p.1-8
Main Authors: Gregory-Smith, D. G, Graves, C. P, Walsh, J. A
Format: Article
Language:English
Subjects:
Applied sciences
Continuous cycle engines: steam and gas turbines, jet engines
Engines and turbines
Exact sciences and technology
Mechanical engineering. Machine design
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creator Gregory-Smith, D. G
Graves, C. P
Walsh, J. A
description The growth of losses, secondary kinetic energy, and streamwise vorticity have been studied in a high turning rotor cascade. Negative vorticity associated with the passage vortex agreed well with predictions of classical secondary flow theory in the early part of the blade passage. However, toward the exit, the distortion of the flow by the secondary velocities rendered the predictions inaccurate. Areas of positive vorticity were associated with the feeding of loss into the bulk flow and have been related to separation lines observed by surface flow visualization.
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source ASME Transactions Journals (Archives)
subjects Applied sciences
Continuous cycle engines: steam and gas turbines, jet engines
Engines and turbines
Exact sciences and technology
Mechanical engineering. Machine design
title Growth of Secondary Losses and Vorticity in an Axial Turbine Cascade
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