Three-dimensional flowfields in a 60-deg curved combustor inlet duct of rectangular cross-section with and without guide vanes were measured using Laser-Doppler velocimetry for the longitudinal, radial, and spanwise velocity components. The Reynolds number based on the bulk mean velocity and hydraulic diameter was The main parameters examined were the guide-vane number and Reynolds number. The results show that to completely eliminate flow separation in the curved combustor inlet three guide vanes should be installed. The critical Reynolds number for the absence of the flow separation is found to decrease with increasing product of radius and aspect ratios. In addition, it is found that in most regions the maximum radial mean velocity, difference between radial and spanwise normal stress, and the turbulent kinetic energy decrease with increasing guide-vane number. A rationale for the absence of flow separation in the one-vane case predicted by previous researchers is also provided.
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June 2001
Technical Papers
Effects of Guide-Vane Number in a Three-Dimensional 60-Deg Curved Side-Dump Combustor Inlet
Tong-Miin Liou, Professor, Fellow ASME,
Tong-Miin Liou, Professor, Fellow ASME
Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu, Taiwan 30043, Republic of China
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Hsin-Li Lee, Ph.D. Candidate,
Hsin-Li Lee, Ph.D. Candidate
Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu, Taiwan 30043, Republic of China
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Chin-Chun Liao, Thermofluids Analysis Assistant Manager,
Chin-Chun Liao, Thermofluids Analysis Assistant Manager,
Design Department, First International Computer, Inc., Portable Computing Group, Taiwan
Search for other works by this author on:
Tong-Miin Liou, Professor, Fellow ASME
Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu, Taiwan 30043, Republic of China
Hsin-Li Lee, Ph.D. Candidate
Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu, Taiwan 30043, Republic of China
Chin-Chun Liao, Thermofluids Analysis Assistant Manager,
Design Department, First International Computer, Inc., Portable Computing Group, Taiwan
Contributed by the Fluids Engineering Division for publication in the JOURNAL OF FLUIDS ENGINEERING. Revised manuscript received by the Fluids Engineering Division May 5, 2000; final manuscript received December 20, 2000. Associate Editor: P. W. Bearman.
J. Fluids Eng. Jun 2001, 123(2): 211-218 (8 pages)
Published Online: December 20, 2000
Article history
Received:
May 5, 2000
Revised:
December 20, 2000
Citation
Liou, T., Lee, H., and Liao, C. (December 20, 2000). "Effects of Guide-Vane Number in a Three-Dimensional 60-Deg Curved Side-Dump Combustor Inlet ." ASME. J. Fluids Eng. June 2001; 123(2): 211–218. https://doi.org/10.1115/1.1358843
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