Experimental and numerical heat transfer from vortex-injection interaction in scramjet flowfields

被引:1
|
作者
Llobet, J. R. [1 ]
Basore, K. D. [1 ]
Gollan, R. J. [1 ]
Jahn, I. H. [1 ]
机构
[1] Univ Queensland, Ctr Hyperson, Sch Mech & Min Engn, Brisbane, Qld 4072, Australia
来源
AERONAUTICAL JOURNAL | 2020年 / 124卷 / 1280期
基金
澳大利亚研究理事会;
关键词
Scramjet; Injection; Vortex; Heat Transfer; Mixing; REUSABLE LAUNCH; GENERATION; TRANSITION;
D O I
10.1017/aer.2020.39
中图分类号
V [航空、航天];
学科分类号
08 ; 0825 ;
摘要
Air-breathing propulsion has the potential to decrease the cost per kilogram for access-to-space, while increasing the flexibility of available low earth orbits. However, to meet the performance requirements, fuel-air mixing inside of scramjet engines and thermal management still need to be improved. An option to address these issues is to use intrinsically generated vortices from scramjet inlets to enhance fuel-air mixing further downstream, leading to shorter, less internal drag generating, and thus more efficient engines. Previous works have studied this vortex-injection interaction numerically, but validation was impractical due to lack of published experimental data. This paper extends upon these previous works by providing experimental data for a canonical geometry, obtained in the T4 Stalker Tube at Mach 8 flight conditions, and assesses the accuracy of numerical methodologies such as RANS CFD to predict the vortex-injection interaction. Focus is placed on understanding the ability of the numerical methodology to replicate the most important aspects of the vortex-injection interaction. Results show overall good agreement between the numerical and experimental results, as all major features are captured. However, limitations are encountered, especially due to a localised region of over predicted heat flux.
引用
收藏
页码:1545 / 1567
页数:23
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