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Low-Pressure Turbine Separation Control: Comparison With Experimental DataThe present work details a computational study, using the Glenn HT code, that analyzes the use of vortex generator jets (VGJs) to control separation on a low-pressure turbine (LPT) blade at low Reynolds numbers. The computational results are also compared with the experimental data for steady VGJs. It is found that the code determines the proper location of the separation point on the suction surface of the baseline blade (without any VGJ) for Reynolds numbers of 50,000 or less. Also, the code finds that the separated region on the suction surface of the blade vanishes with the use of VGJs. However, the separated region and the wake characteristics are not well predicted. The wake width is generally over-predicted while the wake depth is under-predicted.
Document ID
20020070525
Acquisition Source
Glenn Research Center
Document Type
Contractor Report (CR)
Authors
Garg, Vijay K. (Toledo Univ. OH United States)
Date Acquired
September 7, 2013
Publication Date
July 1, 2002
Subject Category
Aircraft Propulsion And Power
Report/Patent Number
NASA/CR-2002-211689
E-13419
GT-2002-30229
NAS 1.26:211689
Meeting Information
Meeting: Turbo Expo 2002
Location: Amsterdam
Country: Netherlands
Start Date: June 3, 2002
End Date: June 6, 2002
Sponsors: Gas Turbine Research Inst., American Society of Mechanical Engineers
Funding Number(s)
CONTRACT_GRANT: NAS3-00180
PROJECT: RTOP 708-73-43
CONTRACT_GRANT: NCC3-926
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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