Effect of inclined ribs on the aero-thermal performance of a trailing edge cavity with crossing jets

F. Coletti, E. Facchinetti, T. Arts

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

5 Scopus citations

Abstract

The present contribution is devoted to the aero-thermal experimental study of a trapezoidal cross-section model, reproducing a trailing edge cooling cavity with one rib-roughened wall and slots along two opposite walls. Four rib geometries are compared to investigate the effect of the relative position of ribs and slots, as well as the tapering of the turbulators. The Reynolds number, defined at the inlet of the test section, is set at 67500 for all the experiments. Insight into the flow field for the different geometries is gained by means of surface streamline flow visualization. Highly resolved heat transfer distributions over the channel walls, including the rib surface, are obtained using steady state liquid crystal thermography. The results demonstrate how the overall thermal performance of the cooling scheme can be enhanced adjusting the rib position with respect to the slots. Moreover, the beneficial effect of tapering the ribs is shown.

Original languageEnglish (US)
Title of host publication8th European Conference on Turbomachinery
Subtitle of host publicationFluid Dynamics and Thermodynamics, ETC 2009 - Conference Proceedings
EditorsM. Manna, F. Martelli, F. Heitmeir
PublisherVerlag der Technischen Universitat Graz
Pages485-496
Number of pages12
ISBN (Electronic)9783851250367
StatePublished - Jan 1 2009
Event8th European Conference on Turbomachinery: Fluid Dynamics and Thermodynamics, ETC 2009 - Graz, Austria
Duration: Mar 23 2009Mar 27 2009

Publication series

Name8th European Conference on Turbomachinery: Fluid Dynamics and Thermodynamics, ETC 2009 - Conference Proceedings
ISSN (Print)2410-4833

Other

Other8th European Conference on Turbomachinery: Fluid Dynamics and Thermodynamics, ETC 2009
CountryAustria
CityGraz
Period3/23/093/27/09

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