Quantifying the effects of convective aerodynamic heating over a double swept-wedge configuration at Mach 6

Fuata, James (2014) Quantifying the effects of convective aerodynamic heating over a double swept-wedge configuration at Mach 6. [USQ Project]

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Abstract

This project sought to quantify the effects of convective aerodynamic heating over a double swept-wedge configuration at a nominal flow speed of Mach 6.

A Type K surface junction thermocouple and a mid-wave infrared camera were used to record surface temperature data, which was analysed and processed in MATLAB to determine the heat transfer rates into the model. Using the same software, surface heat flux maps were produced in order to identify and quantify regions of peak convective aerodynamic heating.

Two experimental runs (Run 280 and Run 285) were conducted at the University of Southern Queensland Hypersonic Wind Tunnel (TUSQ). The second test involved in-situ calibration of the infrared camera at the facility.

Calibration polynomial curves were generated from the calibration process and the most suitable curve was selected. This curve was then used to plot calibrated surface temperature and heat flux histories on the model.

Theoretical predictions were made of the local heat flux on the model. A modified oblique shock wave theory by Emanuel (1992), the ideal gas law and isentropic relations, were used to predict the flow conditions immediately downstream of the attached swept shock wave.

The analytical heat flux values for Run 280 and Run 285 were 3.95 kw/m2 and 3.88 kw/m2, respectively. In comparison, the heat flux values derived using the semi-infinite wall data reduction model for Run 280 and Run 285 were 34.5 kw/m2 and 29.2 kw/m2, respectively.

One of the main objectives of the project was achieved in identifying the regions of peak heating and visualising these areas with heat flux contour maps. Further work is required to adequately quantify calibrated heat flux values.


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Item Type: USQ Project
Item Status: Live Archive
Additional Information: Bachelor of Engineering (Mechanical) project.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering
Supervisors: Buttsworth, David
Date Deposited: 03 Dec 2014 01:35
Last Modified: 15 Oct 2015 02:52
Uncontrolled Keywords: convective aerodynamic heating
Fields of Research : 09 Engineering > 0901 Aerospace Engineering > 090106 Flight Dynamics
URI: http://eprints.usq.edu.au/id/eprint/26429

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