CLC number: V448
On-line Access: 2024-08-27
Received: 2023-10-17
Revision Accepted: 2024-05-08
Crosschecked: 2015-12-16
Cited: 5
Clicked: 5541
Wei Huang, Ming-hui Li, Feng Ding, Jun Liu. Supersonic mixing augmentation mechanism induced by a wall-mounted cavity configuration[J]. Journal of Zhejiang University Science A, 2016, 17(1): 45-53.
@article{title="Supersonic mixing augmentation mechanism induced by a wall-mounted cavity configuration",
author="Wei Huang, Ming-hui Li, Feng Ding, Jun Liu",
journal="Journal of Zhejiang University Science A",
volume="17",
number="1",
pages="45-53",
year="2016",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A1500244"
}
%0 Journal Article
%T Supersonic mixing augmentation mechanism induced by a wall-mounted cavity configuration
%A Wei Huang
%A Ming-hui Li
%A Feng Ding
%A Jun Liu
%J Journal of Zhejiang University SCIENCE A
%V 17
%N 1
%P 45-53
%@ 1673-565X
%D 2016
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A1500244
TY - JOUR
T1 - Supersonic mixing augmentation mechanism induced by a wall-mounted cavity configuration
A1 - Wei Huang
A1 - Ming-hui Li
A1 - Feng Ding
A1 - Jun Liu
J0 - Journal of Zhejiang University Science A
VL - 17
IS - 1
SP - 45
EP - 53
%@ 1673-565X
Y1 - 2016
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A1500244
Abstract: An efficient mixing process is very important for the engineering implementation of an airbreathing propulsion system. The air and injectant should be mixed sufficiently before entering the combustor. Two new wall-mounted cavity configurations were proposed to enhance the mixing process in a conventional transverse injection flow field. Their flow field properties were compared with those of a system with only transverse injection ports. Grid independency analysis was used to choose a suitable grid scale, and the mixing efficiencies at four cross-sectional planes (namely x=20, 40, 60, and 80 mm, which are just downstream of the jet orifice) were compared for the configurations considered in this study. The results showed that hydrogen penetrated deeper when a cavity was mounted upstream of the transverse injection ports. This is beneficial to the mixing process in supersonic flows. The mixing efficiency of the configuration with the wall-mounted cavity was better than that of the conventional physical model, and the mixing efficiency of the proposed novel physical model I (98.71% at x=20 mm) was the highest of all. In the case with only transverse injection ports, the vortex was broken up by the strong interaction between the shear layer over the cavity and the jet.
The authors propose to study two newly wall-mounted cavity configurations to enhance the mixing process in supersonic mixing, as scramjet engines combustors. By extending the experimental works of T. Handa & coworkers to further investigate the mixing properties of two new cavity configurations located ahead the injectors. A numerical study is showed to compare three configurations: conventional, novel I and novel II. The work is innovative and interesting.
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