TY - GEN
T1 - Aero-thermal investigation of a rib-roughened trailing edge channel with crossing-jets - Part I
T2 - 2008 ASME Turbo Expo
AU - Armellini, Alessandro
AU - Coletti, Filippo
AU - Arts, Tony
AU - Scholtes, Christophe
PY - 2008/12/1
Y1 - 2008/12/1
N2 - 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 67500for 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.
AB - 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 67500for 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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U2 - 10.1115/GT2008-50694
DO - 10.1115/GT2008-50694
M3 - Conference contribution
AN - SCOPUS:69949124849
SN - 9780791843130
T3 - Proceedings of the ASME Turbo Expo
SP - 651
EP - 661
BT - 2008 Proceedings of the ASME Turbo Expo
Y2 - 9 June 2008 through 13 June 2008
ER -