In the present study, the heat transfer characteristics on the suction and pressure sides of an outlet guide vane (OGV) are investigated by using liquid crystal thermography (LCT) method in a linear cascade. Because the OGV has a complex curved surface, it is necessary to calibrate the LCT by taking into account the effect of viewing angles of the camera. Based on the calibration results, heat transfer measurements of the OGV were conducted. Both on- and off-design conditions were tested, where the incidence angles of the OGV were 25 degrees and −25 degrees, respectively. The Reynolds numbers, based on the axial flow velocity and the chord length, were 300,000 and 450,000. In addition, heat transfer on suction side of the OGV with +40 degrees incidence angle was measured. The results indicate that the Reynolds number and incidence angle have considerable influences upon the heat transfer on both pressure and suction surfaces. For on-design conditions, laminar-turbulent boundary layer transitions are on both sides, but no flow separation occurs; on the contrary, for off-design conditions, the position of laminar-turbulent boundary layer transition is significantly displaced downstream on the suction surface, and a separation occurs from the leading edge on the pressure surface. As expected, larger Reynolds number gives higher heat transfer coefficients on both sides of the OGV.
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ASME Turbo Expo 2014: Turbine Technical Conference and Exposition
June 16–20, 2014
Düsseldorf, Germany
Conference Sponsors:
- International Gas Turbine Institute
ISBN:
978-0-7918-4572-1
PROCEEDINGS PAPER
An Experimental Study of Heat Transfer on an Outlet Guide Vane
Chenglong Wang,
Chenglong Wang
Lund University, Lund, Sweden
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Valery Chernoray,
Valery Chernoray
Chalmers University of Technology, Gothenburg, Sweden
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Hans Abrahamsson
Hans Abrahamsson
GKN Aerospace Engine Systems, Trollhättan, Sweden
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Chenglong Wang
Lund University, Lund, Sweden
Lei Wang
Lund University, Lund, Sweden
Bengt Sundén
Lund University, Lund, Sweden
Valery Chernoray
Chalmers University of Technology, Gothenburg, Sweden
Hans Abrahamsson
GKN Aerospace Engine Systems, Trollhättan, Sweden
Paper No:
GT2014-25100, V05BT14A001; 10 pages
Published Online:
September 18, 2014
Citation
Wang, C, Wang, L, Sundén, B, Chernoray, V, & Abrahamsson, H. "An Experimental Study of Heat Transfer on an Outlet Guide Vane." Proceedings of the ASME Turbo Expo 2014: Turbine Technical Conference and Exposition. Volume 5B: Heat Transfer. Düsseldorf, Germany. June 16–20, 2014. V05BT14A001. ASME. https://doi.org/10.1115/GT2014-25100
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