Transverse injection from a hypersonic cone

Sercombe, David B. (2004) Transverse injection from a hypersonic cone. [USQ Project]


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The purpose of this project was to investigate sonic gas injection into a hypersonic
free stream from a conical geometry base. The project emphasis was image based data
aquisition and analysis and consequently the work performed included considerable
development of computational image analysis tools.
The major achievement in the image analysis section was the prototyping of an accurate
image rotation method using a grid-based colour interpolation approach in MATLAB.
This allowed the rotation of flow visualisation footage obtained from the USQ Gun
Tunnel so that the frame-to-frame orientation was consistent.
Further achievements included the edge detection and analysis work performed on
footage of a hot air jet issuing into quiescent surrounds. The results from this work
included a method of jet edge detection that worked in spite of marked variations in
brightness between frames.
A numerical solution was obtained, using MATLAB, for the Taylor-Maccoll equations
that govern hypersonic flow around conical geometry. The solution to this pair of non-
linear differential equations benefited significantly from the crossing point detection
capabilities of the MATLAB ODE solvers.
Finally the transverse injection footage obtained from model testing in the USQ Gun
Tunnel allowed the quantification of injection based parameters such as jet penetration
into the free stream and fore-body conical shock angle.

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Item Type: USQ Project
Refereed: No
Item Status: Live Archive
Additional Information: Additional project files available on CD-ROM held in USQ library.
Faculty/School / Institute/Centre: Historic - Faculty of Engineering and Surveying - Department of Mechanical and Mechatronic Engineering (Up to 30 Jun 2013)
Date Deposited: 11 Oct 2007 00:13
Last Modified: 02 Jul 2013 22:30
Uncontrolled Keywords: transverse injection, hypersonic cone, hot air jet analysis, MATLAB, gun tunnel, hypersonic flow, conical geometry, Taylor-Maccoll equations
Fields of Research (2008): 09 Engineering > 0915 Interdisciplinary Engineering > 091508 Turbulent Flows
09 Engineering > 0901 Aerospace Engineering > 090107 Hypersonic Propulsion and Hypersonic Aerodynamics
Fields of Research (2020): 40 ENGINEERING > 4012 Fluid mechanics and thermal engineering > 401213 Turbulent flows
40 ENGINEERING > 4001 Aerospace engineering > 400106 Hypersonic propulsion and hypersonic aerothermodynamics

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