This invited paper presents a review of research done over the past several years at Purdue on non-canonical jets-in-crossflow. It is a retrospective and an integrative compilation of results previously reported as well as some new ones. The emphasis is on jets emanating from “short” holes, with length-diameter ratios of one or less. These are non-canonical in the sense that the flow is unable to “adjust” to the hole, unlike that in case of a long hole in which fully developed pipe flow can be attained. This motivated by gas turbine film cooling applications. Experimental results acquired with Particle Image Velocimetry will be presented primarily, with some complementary information gained from RANS simulations of the flow. Many different aspects of the problem have been investigated, and in this paper the focus will be on structural features within the hole and in the developing jet and crossflow interaction. A significant result is that the in-hole vertical structures, depending on their sense of rotation, tend to augment or weaken the primary counter-rotating vortex pair. This impacts global features such a jet trajectory and spreading.
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ASME/JSME 2003 4th Joint Fluids Summer Engineering Conference
July 6–10, 2003
Honolulu, Hawaii, USA
Conference Sponsors:
- Fluids Engineering Division
ISBN:
0-7918-3697-5
PROCEEDINGS PAPER
Non-Canonical Jets-in-Crossflow
Michael W. Plesniak
Michael W. Plesniak
Purdue University, West Lafayette, IN
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Michael W. Plesniak
Purdue University, West Lafayette, IN
Paper No:
FEDSM2003-45342, pp. 1939-1948; 10 pages
Published Online:
February 4, 2009
Citation
Plesniak, MW. "Non-Canonical Jets-in-Crossflow." Proceedings of the ASME/JSME 2003 4th Joint Fluids Summer Engineering Conference. Volume 2: Symposia, Parts A, B, and C. Honolulu, Hawaii, USA. July 6–10, 2003. pp. 1939-1948. ASME. https://doi.org/10.1115/FEDSM2003-45342
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