航空煤油-氢-空气混合物在不同氢比和初始压力下在阻塞管内爆轰起爆的数值研究

IF 8.1 2区工程技术 Q1 CHEMISTRY, PHYSICAL

International Journal of Hydrogen Energy Pub Date : 2025-05-11 DOI:10.1016/j.ijhydene.2025.05.102

Yuxiang Hui , Zhiwu Wang , Weifeng Qin , Jingtao Xiao , Yongfeng Liu , Dingming Li , Man Zhang

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引用次数: 0

摘要

航空煤油掺氢为提高航空煤油的起爆性能提供了一条很有前途的途径。本文对以航空煤油/氢混合燃料为燃料的阻塞管内，在氢比为0.1 ~ 0.5，初始压力为0.5 ~ 2atm范围内的爆轰起爆过程进行了数值研究。分析了火焰加速起爆机理，探讨了氢比和初始压力对起爆的影响。结果表明，阻爆管内的起爆过程可分为火焰加速、爆燃至爆轰过渡（DDT）和自持爆轰三个阶段。总结了不同氢比和初始压力下爆轰起爆时间、爆轰起爆距离、滴滴涕上升时间、滴滴涕上升距离以及滴滴涕过程所需时间和距离的变化规律。此外，还研究了氢比和初始压力对爆轰速度的影响。

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Numerical study on detonation initiation of aviation kerosene-hydrogen-air mixtures in an obstructed tube under various hydrogen ratios and initial pressures

Aviation kerosene mixed with hydrogen provides a promising approach to improve the detonation initiation performance of aviation kerosene. In this study, the detonation initiation processes in an obstructed tube fueled with aviation kerosene/hydrogen mixtures were numerically investigated, covering hydrogen ratios from 0.1 to 0.5 and initial pressures from 0.5 atm to 2 atm. The mechanism of flame acceleration and detonation initiation was analyzed, and the effects of hydrogen ratio and initial pressure on detonation initiation were explored. The results indicated that the detonation initiation process in the obstructed tube could be divided into three stages: flame acceleration, deflagration to detonation transition (DDT), and self-sustaining detonation. The variations in detonation initiation time, detonation initiation distance, DDT run up time, DDT run up distance, the time and distance required for the DDT process under different hydrogen ratios and initial pressures were summarized. Additionally, the effects of hydrogen ratio and initial pressure on detonation velocity were also investigated.

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来源期刊

International Journal of Hydrogen Energy 工程技术-环境科学

CiteScore

13.50

自引率

25.00%

发文量

3502

审稿时长

60 days

期刊介绍： The objective of the International Journal of Hydrogen Energy is to facilitate the exchange of new ideas, technological advancements, and research findings in the field of Hydrogen Energy among scientists and engineers worldwide. This journal showcases original research, both analytical and experimental, covering various aspects of Hydrogen Energy. These include production, storage, transmission, utilization, enabling technologies, environmental impact, economic considerations, and global perspectives on hydrogen and its carriers such as NH3, CH4, alcohols, etc. The utilization aspect encompasses various methods such as thermochemical (combustion), photochemical, electrochemical (fuel cells), and nuclear conversion of hydrogen, hydrogen isotopes, and hydrogen carriers into thermal, mechanical, and electrical energies. The applications of these energies can be found in transportation (including aerospace), industrial, commercial, and residential sectors.