Afterbody Flow Of a Dissociating Gas Downstream of a Blunt Nose

Macrossan, Michael N. and Stalker, Ray J. (1987). Afterbody Flow Of a Dissociating Gas Downstream of a Blunt Nose. In: American Institue of Aeronautics and Astronautics, Aerospace Sciences Meeting, Reno, Nevada, USA, (). January, 1987.

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Author Macrossan, Michael N.
Stalker, Ray J.
Title of paper Afterbody Flow Of a Dissociating Gas Downstream of a Blunt Nose
Conference name American Institue of Aeronautics and Astronautics, Aerospace Sciences Meeting
Conference location Reno, Nevada, USA
Conference dates January, 1987
Publication Year 1987-01-01
Sub-type Fully published paper
Volume AIAA paper
Issue 87-407
Abstract/Summary A free-piston driven shock tunnel, operating in the non-reflected mode, was used to obtain a strongly dissociating flow of pure nitrogen (Mach 5.66) over a blunt nosed body, 65 mm long. The flow speed is approximately 6 km/s and the Damkohler number of O(1) indicates that the flow is in chemical non-equilibrium. The useful test time is shorter than for conventional shock tunnel operation but the "prior-steady-flow" technique has been used to establish a fully developed flow. Interferograms of the afterbody flow have been made and compared with results obtained from a finite volume (kinetic theory based) CFD method the "Equilibrium Flux Method" for chemically reacting flows. The results show good agreement between experiments and computations. The experiments were perfomed in the T3 shock tunnel at the Australian National University. [For more details of the CFD method see M N Macrossan J Comput Physics v80, p204 1989. For more details of the flow and the experiments see M N Macrossan J Fluid Mechanics v207, p167 1990].
Subjects 240502 Fluid Physics
290299 Aerospace Engineering not elsewhere classified
Keyword hypervelocity flow
dissociating gas
high enthalpy flow
chemical non-equilibrium
kinetic theory CFD method
Equilibrium Flux Method
kinetic theory Euler solver
Q-Index Code E1
Q-Index Status Provisional Code
Institutional Status Unknown
Additional Notes For more details of the kinetic-theory-based CFD method used (the Equilibrium Flux Method) see M N Macrossan J Comput Physics v80, p204 1989. For more details of the flow and the experiments see M N Macrossan J Fluid Mechanics v207, p167 1990.

Document type: Conference Paper
Collection: School of Mechanical & Mining Engineering Publications
 
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Created: Fri, 09 Dec 2005, 10:00:00 EST by Michael N Macrossan