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Characteristics of the Swirling Flow Generated by an Axial SwirlerAn experimental investigation was conducted to study the aerodynamic characteristics of the confined, non-reacting, swirling flow field. The flow was generated by a helicoidal axial-vaned swirler with a short internal convergent-divergent venturi, which was confined within 2-inch square test section. A series of helicoidal axial-vaned swirlers have been designed with tip vane angles of 40 deg., 45 deg., 50 deg., 55 deg., 60 deg. and 65 deg.. The swirler with the tip vane angle of 60 deg. was combined with several simulated fuel nozzle insertions of varying lengths. A two-component Laser Doppler Velocimetry (LDV) system was employed to measure the three-component mean velocities and Reynolds stresses. Detailed data are provided to enhance understanding swirling flow with different swirl degrees and geometries and to support the development of more accurate physicaVnumerica1 models. The data indicated that the degree of swirl had a clear impact on the mean and turbulent flow fields. The swirling flow fields changed significantly with the addition of a variety of simulated fuel nozzle insertion lengths
Document ID
20070032822
Acquisition Source
Glenn Research Center
Document Type
Conference Paper
Authors
Fu, Yongqiang
(Cincinnati Univ. OH, United States)
Jeng, San-Mou
(Cincinnati Univ. OH, United States)
Tacina, Robert
(NASA Glenn Research Center Cleveland, OH, United States)
Date Acquired
August 23, 2013
Publication Date
June 6, 2005
Subject Category
Mechanical Engineering
Report/Patent Number
GT2005-68728
Meeting Information
Meeting: ASME TurboExpo 2005: Power for Land, Sea and Air
Location: Reno, NV
Country: United States
Start Date: June 6, 2005
End Date: June 9, 2005
Sponsors: American Society of Mechanical Engineers
Funding Number(s)
CONTRACT_GRANT: NNC04GA11G
Distribution Limits
Public
Copyright
Other

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