Fluid flow and heat transfer coefficient associated with flow inside short holes (L/D = 1) discharging orthogonally into a crossflow was investigated experimentally and numerically for Re ranging from 0.5×105 to 2×105, and blowing ratio ranging from 1.3 to 3.2. The basic configuration studied consists of a feed tube with five orthogonally located gas holes. Four different hole configurations were studied. The transient heat transfer study employs an IR-camera to determine the local heat transfer coefficient inside each hole. Velocity measurements and numerical flow simulation were used to better understand the measured heat transfer distribution inside the hole. The Nusselt number distribution along the hole surface exhibits significant circumferential non-uniformity associated with impingement and separation, with localized high heat transfer regions caused by flow impingement. The heat transfer coefficient was observed to be a strong function of the Reynolds number, but a weak function of the blowing ratio.
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ASME 2011 Turbo Expo: Turbine Technical Conference and Exposition
June 6–10, 2011
Vancouver, British Columbia, Canada
Conference Sponsors:
- International Gas Turbine Institute
ISBN:
978-0-7918-5465-5
PROCEEDINGS PAPER
Flow Distribution and Heat Transfer Coefficients Inside Gas Holes Discharging Into an Orthogonal Crossflow Available to Purchase
S. Acharya,
S. Acharya
Louisiana State University, Baton Rouge, LA
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A. Eshtiaghi,
A. Eshtiaghi
Louisiana State University, Baton Rouge, LA
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R. Schilp
R. Schilp
Siemens Energy, Orlando, FL
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S. Acharya
Louisiana State University, Baton Rouge, LA
A. Eshtiaghi
Louisiana State University, Baton Rouge, LA
R. Schilp
Siemens Energy, Orlando, FL
Paper No:
GT2011-46854, pp. 1805-1815; 11 pages
Published Online:
May 3, 2012
Citation
Acharya, S, Eshtiaghi, A, & Schilp, R. "Flow Distribution and Heat Transfer Coefficients Inside Gas Holes Discharging Into an Orthogonal Crossflow." Proceedings of the ASME 2011 Turbo Expo: Turbine Technical Conference and Exposition. Volume 5: Heat Transfer, Parts A and B. Vancouver, British Columbia, Canada. June 6–10, 2011. pp. 1805-1815. ASME. https://doi.org/10.1115/GT2011-46854
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