Design of test flows to investigate binary scaling in high enthalpy CO2-N2 mixtures

de Crombrugghe, G., Gildfind, D., Zander, F., McIntyre, T. and Morgan, R. (2014). Design of test flows to investigate binary scaling in high enthalpy CO2􀀀-N2 mixtures. In: Harun Chowdhury and Firoz Alam, Proceedings of the 19th Australasian Fluid Mechanics Conference. 19th Australasian Fluid Mechanics Conference, Melbourne, VIC, Australia, (325.1-325.4). 8-11 December 2014.

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Author de Crombrugghe, G.
Gildfind, D.
Zander, F.
McIntyre, T.
Morgan, R.
Title of paper Design of test flows to investigate binary scaling in high enthalpy CO2􀀀-N2 mixtures
Conference name 19th Australasian Fluid Mechanics Conference
Conference location Melbourne, VIC, Australia
Conference dates 8-11 December 2014
Proceedings title Proceedings of the 19th Australasian Fluid Mechanics Conference
Place of Publication Melbourne, VIC, Australia
Publisher RMIT University
Publication Year 2014
Sub-type Fully published paper
ISBN 9780646596952
Editor Harun Chowdhury
Firoz Alam
Start page 325.1
End page 325.4
Total pages 4
Collection year 2015
Language eng
Formatted Abstract/Summary
Binary scaling is a similitude law that facilitates the study of hypersonic flows around blunt bodies. It conserves the Reynolds number and the binary (two-body) reaction rates, which are mainly present in the nonequilibrium layer, and scales properly the convective heat transfer. It requires duplication of the product of density and a length scale of the flow, rL, as well as the free-stream enthalpy, Htot¥ . Its use for ground-to-flight extrapolation depends on the fractional extent of regions of the flow where higher order reactions become important.

This paper presents the design of flow conditions relevant to the study of binary scaling for the X2 super-orbital expansion tube. Flows conditions with similar free-stream enthalpy but distinct free-stream densities were obtained. With the help of numerical simulation, it was confirmed that those conditions were suitable to isolate the effect of binary scaling from the uncertainties and scattering of free-stream conditions.
Q-Index Code E1
Q-Index Status Confirmed Code
Institutional Status UQ

 
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Created: Mon, 02 Feb 2015, 09:04:43 EST by Katie Gollschewski on behalf of School of Mechanical and Mining Engineering