Study of an axisymmetric backward facing step model in a supersonic flow

Zhao, Mengmeng and Buttsworth, David R. and Choudhury, Rishabh and Malpress, Ray and Xing, Fei (2016) Study of an axisymmetric backward facing step model in a supersonic flow. In: 21st AIAA International Space Planes and Hypersonics Technologies Conference (Hypersonics 2017), 6-9 March 2017, Xiamen, China.


A supersonic flow over an axisymmetric backward facing step model with and without a hydrogen jet was investigated experimentally and numerically. The hypersonic flow of Mach 3.94 was produced by the free-piston wind tunnel of University of Southern Queensland (TUSQ) and the hydrogen supply system was designed to maintain a steady injected fuel flow into the supersonic flow during the testing time. The wall pressures were measured by pressure sensor and flow field was captured using schlieren visualization technique. The FLUENT was used to simulate the model under different experimental conditions. The experiment results show that the static pressure rises due to shock came from cone’s wall strikes the cylinder’s wall and the recirculation area is formed near the location of the step. The appearance of H2 injection or the increase of the momentum of hydrogen injection will increase the static pressure of the location near the step and decrease the growth trend of pressure in the experimental and simulation results.

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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: No
Item Status: Live Archive
Additional Information: Permanent restricted access to Online Published paper, in accordance with the copyright policy of the publisher.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering
Date Deposited: 15 Dec 2017 01:52
Last Modified: 21 Sep 2018 03:49
Fields of Research : 09 Engineering > 0901 Aerospace Engineering > 090101 Aerodynamics (excl. Hypersonic Aerodynamics)
Identification Number or DOI: 10.2514/6.2017-2181

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