A computational visualization of three dimensional flow: Finding optimum heat transfer and pressure drop characteristics from short cross-pin arrays and comparison with two dimensional calculations

E. E. Donahoo, C. Camci, A. K. Kulkarni, A. D. Belegundt

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

4 Scopus citations

Abstract

There are many teat transfer augmentation arthods that are employed in turbine blade &sign, such as impingement cooling, film cooling, serpentine passages, trip strips, vortex chambers, and pin fins. The use of crorspins in the trailing edge ection of turbine blades is commonly a viable option due to their ability to promote turbulence as well supply structural integrity and stiffness to the blade itself. Numerous crosspin shapes and arrangements are possible, but mly certain configurations offer tigh Mat transfer capability while maintaining low total pressure loss. This gudy presents results from 3-D numerical simulations of airflow through a turbine Made internal cooling passage. The simulations model viscous flow and heat transfer over fill crosspins of circular cross-section with fixed Iright-todameter ratio of as, fixed transverse-to-diameter spacing ratio of 1.5, and varying streamwise spacing. Preliminary analysis indicates that enthrall effects dominate the flow and heat transfer at bwer Reynolds numbers. The flow dynamics involved with the relative dose proximity d. the endwalls for arch short crosspins have a definite influence co crosspin efficiency for downstream rows.

Original languageEnglish (US)
Title of host publicationHeat Transfer; Electric Power; Industrial and Cogeneration
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791878606
DOIs
StatePublished - Jan 1 1999
EventASME 1999 International Gas Turbine and Aeroengine Congress and Exhibition, GT 1999 - Indianapolis, United States
Duration: Jun 7 1999Jun 10 1999

Publication series

NameProceedings of the ASME Turbo Expo
Volume3

Other

OtherASME 1999 International Gas Turbine and Aeroengine Congress and Exhibition, GT 1999
CountryUnited States
CityIndianapolis
Period6/7/996/10/99

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All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Donahoo, E. E., Camci, C., Kulkarni, A. K., & Belegundt, A. D. (1999). A computational visualization of three dimensional flow: Finding optimum heat transfer and pressure drop characteristics from short cross-pin arrays and comparison with two dimensional calculations. In Heat Transfer; Electric Power; Industrial and Cogeneration (Proceedings of the ASME Turbo Expo; Vol. 3). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/99-GT-257