An Experimental Study of Heat Transfer on an Outlet Guide Vane
Paper in proceedings, 2014

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, laminarturbulent 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.

Author

C. F. Wang

Lund University

L. Wang

Lund University

Bengt Sundén

Lund University

Valery Chernoray

Chalmers, Applied Mechanics, Fluid Dynamics

Hans Abrahamsson

GKN Aerospace

ASME Turbo Expo 2014: Turbine Technical Conference and Exposition, GT 2014; Dusseldorf; Germany; 16 June 2014 through 20 June 2014

Vol. 5B UNSP V05BT14A001-

Subject Categories

Mechanical Engineering

Aerospace Engineering

Fluid Mechanics and Acoustics

Driving Forces

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Transport

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Basic sciences

DOI

10.1115/GT2014-25100

ISBN

978-079184572-1

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Latest update

3/2/2018 9