Numerical analysis of HyShot Scramjet Model with different throat heights

Xing, Fei; Cai, Jiangqian; Huang, Yue; Yao, Yufeng

Abstract

This paper presents a computational fluid dynamics (CFD) study of non-reacting and reacting flows in a scramjet model with three different throat heights. This scramjet model includes two compression ramps at the inlet, followed by a combustion chamber and thrust surfaces. The hydrogen is injected through an array of holes on the ramp surfaces, and the ignition is trigged by increased gas mixture temperature due to strong shock-shock interactions. The primary goal of the study is to evaluate the detailed shock-induced combustion processes by comparing CFD predictions with available experimental data, thus to understand the underlying combustion flow physics. For the ‘fuel off’ cases, it was found that the CFD simulation produces the wall pressures in good agreement with the measurements. While for the ‘fuel on’ cases, the CFD simulation results of combustion flow exhibit strong dependence on the turbulence model and turbulent combustion model choices. The desirable ‘radical farming’ process has been only partially achieved in the flow field adjacent to the combustor walls, mainly due to the lacking of the penetration depth from the injector to the center main flow. The effect of fuel injection angle could affect the penetration depth and also the specific thrust of the scramjet engine.

• Presentation Conference Type: Conference Paper (published)
• Conference Name: 21st AIAA International Space Planes and Hypersonics Technologies Conference, Hypersonics 2017
• Start Date: Mar 6, 2017
• End Date: Mar 9, 2017
• Acceptance Date: Nov 14, 2016
• Publication Date: Mar 6, 2017
• Deposit Date: Mar 10, 2017
• Publicly Available Date: Mar 14, 2017
• Journal: The American Institute of Aeronautics and Astronautics
• Print ISSN: 2017-2121
• Peer Reviewed: Peer Reviewed
• Book Title: 21st AIAA International Space Planes and Hypersonics Technologies Conference
• ISBN: 9781624104633
• DOI: https://doi.org/10.2514/6.2017-2121
• Keywords: numerical, analysis, HyShot Scramjet Model, throat heights
• Public URL: https://uwe-repository.worktribe.com/output/1434989
• Publisher URL: http://dx.doi.org/10.2514/6.2017-2121
• Additional Information: Additional Information : In: 21st AIAA International Space Planes and Hypersonic Systems and Technology Conference (Hypersonics 2017), Xiamen, March 6-9, 2017; Title of Conference or Conference Proceedings : 1st AIAA International Space Planes and Hypersonic Systems and Technology Conference (Hypersonics 2017)
• Contract Date: Mar 10, 2017