Hypersonic Viscous Drag Reduction via Multiporthole Injector Arrays

Pudsey, Adrian S., Boyce, Russell R. and Wheatley, Vincent (2013) Hypersonic Viscous Drag Reduction via Multiporthole Injector Arrays. Journal of Propulsion and Power, 29 5: 1087-1096. doi:10.2514/1.B34782

Author Pudsey, Adrian S.
Boyce, Russell R.
Wheatley, Vincent
Title Hypersonic Viscous Drag Reduction via Multiporthole Injector Arrays
Journal name Journal of Propulsion and Power   Check publisher's open access policy
ISSN 0748-4658
Publication date 2013-09-01
Year available 2013
Sub-type Article (original research)
DOI 10.2514/1.B34782
Open Access Status Not yet assessed
Volume 29
Issue 5
Start page 1087
End page 1096
Total pages 10
Place of publication Reston, VA United States
Publisher American Institute of Aeronautics and Astronautics Inc
Language eng
Formatted abstract
A numerical study has been performed to investigate the film-cooling drag reduction performance of a small-scale multiport injector array, in addition to its potential for improved boundary-layer combustion-induced drag reduction. Hydrogen fuel is injected on a flat plate through an array consisting of four streamwise aligned flush circular portholes into a Mach 4.5 crossflow. Parametric studies were conducted on injectant mass flow rate and streamwise jet-to-jet spacing using the Reynolds-averaged Navier-Stokes equations with Menter's Shear Stress Transport turbulence model. Complex jet interactions were found in the injection region with a variety of flow features dependent upon the specific configuration. These flow features were found to have subtle effects on the overall system performance. Total viscous drag reductions of up to 60% over a plate length of 0.5 m were achieved, with local drag reductions of over90%in the near field. Significant wall heat transfer reductions were also found in all cases. Drag reduction and wall heat transfer rates were strongly influenced by injectant mass flow rate, and only moderately effected by streamwise spacing. The maximum drag reduction performance was found for the highest injectant mass flow rate and closest streamwise jet-to-jet spacing. In contrast, mixing performance generally improved with reduced mass flow rate and increased streamwise spacing.
Keyword Cross-Flow
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
Official 2014 Collection
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Citation counts: TR Web of Science Citation Count  Cited 10 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 14 times in Scopus Article | Citations
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Created: Sun, 27 Oct 2013, 10:12:57 EST by System User on behalf of School of Mechanical and Mining Engineering