The present contribution addresses the aero-thermal experimental and computational study of a trapezoidal cross-section model simulating a trailing edge cooling cavity with one rib-roughened wall. The flow is fed through tilted slots on one side wall and exits through straight slots on the opposite side wall. The flow field aerodynamics is investigated in part I of the paper. The reference Reynolds number is defined at the entrance of the test section and set at 67500 for all the experiments. A qualitative flow model is deduced from surface-streamline flow visualizations. Two-dimensional Particle Image Velocimetry measurements are performed in several planes around mid-span of the channel and recombined to visualize and quantify three-dimensional flow features. The jets issued from the tilted slots are characterized and the jet-rib interaction is analyzed. Attention is drawn to the motion of the flow deflected by the rib-roughened wall and impinging on the opposite smooth wall. The experimental results are compared with the numerical predictions obtained from the finite volume, RANS solver CEDRE.
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ASME Turbo Expo 2008: Power for Land, Sea, and Air
June 9–13, 2008
Berlin, Germany
Conference Sponsors:
- International Gas Turbine Institute
ISBN:
978-0-7918-4314-7
PROCEEDINGS PAPER
Aero-Thermal Investigation of a Rib-Roughened Trailing Edge Channel With Crossing-Jets: Part I—Flow Field Analysis
Alessandro Armellini,
Alessandro Armellini
von Karman Institute, Rhode Saint Gene`se, Belgium
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Filippo Coletti,
Filippo Coletti
von Karman Institute, Rhode Saint Gene`se, Belgium
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Tony Arts,
Tony Arts
von Karman Institute, Rhode Saint Gene`se, Belgium
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Christophe Scholtes
Christophe Scholtes
Snecma, Reau, France
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Alessandro Armellini
von Karman Institute, Rhode Saint Gene`se, Belgium
Filippo Coletti
von Karman Institute, Rhode Saint Gene`se, Belgium
Tony Arts
von Karman Institute, Rhode Saint Gene`se, Belgium
Christophe Scholtes
Snecma, Reau, France
Paper No:
GT2008-50694, pp. 651-661; 11 pages
Published Online:
August 3, 2009
Citation
Armellini, A, Coletti, F, Arts, T, & Scholtes, C. "Aero-Thermal Investigation of a Rib-Roughened Trailing Edge Channel With Crossing-Jets: Part I—Flow Field Analysis." Proceedings of the ASME Turbo Expo 2008: Power for Land, Sea, and Air. Volume 4: Heat Transfer, Parts A and B. Berlin, Germany. June 9–13, 2008. pp. 651-661. ASME. https://doi.org/10.1115/GT2008-50694
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