Aero-thermal investigation of a rib-roughened trailing edge channel with crossing-jets - Part I: Flow field analysis

Alessandro Armellini, Filippo Coletti, Tony Arts, Christophe Scholtes

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Scopus citations

Abstract

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.

Original languageEnglish (US)
Title of host publication2008 Proceedings of the ASME Turbo Expo
Subtitle of host publicationPower for Land, Sea, and Air
Pages651-661
Number of pages11
EditionPART A
DOIs
StatePublished - Dec 1 2008
Event2008 ASME Turbo Expo - 2008 ASME Turbo Expo, Germany
Duration: Jun 9 2008Jun 13 2008

Publication series

NameProceedings of the ASME Turbo Expo
NumberPART A
Volume4

Other

Other2008 ASME Turbo Expo
CountryGermany
City2008 ASME Turbo Expo
Period6/9/086/13/08

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