发表机构
Institute of Mechanics, Chinese Academy of Sciences; School of Engineering Science, University of Chinese Academy of Sciences（中国科学院力学研究所; 中国科学院大学工程科学学院）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本研究通过数值模拟对比楔诱导与凸块强制两种起爆方式，发现凸块强制起爆无需精确匹配参数，可在马赫10飞行条件下可靠起爆并形成稳定斜爆震流场。
AI 中文摘要
煤油燃料斜爆震波的起爆与传播机制是斜爆震波发动机研发的关键问题。本研究采用二维守恒型欧拉方程及二阶两步全局化学反应模型，对飞行马赫数为10的煤油燃料斜爆震进行数值模拟，旨在对比楔诱导起爆与凸块强制起爆两种方式。结果表明，在不同飞行高度下，斜爆震流场遵循ρL二元标度律；楔诱导起爆需要进气出口条件、楔角、楔长及当量比等参数高度精确匹配，而凸块强制起爆利用驻点处的高总温与总压，无需精确匹配这些参数，因此凸块强制起爆方法可提供可靠的斜爆震起爆效果与稳定的斜爆震流场。
英文摘要
The initiation and propagation mechanisms of kerosene-fueled oblique detonation waves are key issues in the development of oblique detonation wave engines. In this study, numerical simulations of kerosene-fueled oblique detonation at a flight Mach number of 10 were conducted using the two-dimensional conservative Euler equations and a second-order two-step global chemical reaction model. The objective was to compare wedge-induced initiation with bump-forced initiation. The results show that, at different flight altitudes, the oblique detonation flow field follows the \r{ho}L binary scaling law. Wedge-induced initiation requires highly precise matching of parameters such as the inlet-exit conditions, wedge angle and length, and equivalence ratio. In contrast, bump-forced initiation exploits the high total temperature and total pressure at the stagnation point and therefore does not require precise matching of these parameters. Therefore, the bump-forced initiation method provides reliable oblique detonation initiation and a stable oblique detonation flow field.
