O2/H2O对RP-3煤油点火和火焰传播的影响：实验与动力学模拟相结合的研究

IF 6.2 2区工程技术 Q2 ENERGY & FUELS

Combustion and Flame Pub Date : 2025-10-10 DOI:10.1016/j.combustflame.2025.114531

Shuhao Li , Licheng Zhong , Yihuan Dong , Xianggeng Wei , Shuanghui Xi , Gengqi Liu , Da Yao , Baiyan Wang , Xudong Jia , Xiao Guo , Zhenhua Wen , Quan-De Wang , Jinhu Liang

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引用次数: 0

摘要

了解RP-3煤油在O2/H2O混合物中的自燃和火焰传播特性对于推进化学动力学建模和优化过氧化氢(H2O2)/煤油双推进剂火箭发动机具有重要意义。本研究将实验测量与动力学建模相结合，系统地研究了RP-3在O2/H2O气氛下的燃烧行为。采用高压激波管（HPST）和定容燃烧容器对RP-3在O2/H2O环境下的点火延迟时间（IDTs）和层流火焰速度（lfs）进行了量化。建立了RP-3/O2/H2O体系的两种燃烧机制，包括综合反应机制（184种，1252种反应）和小规模反应机制（40种，121种反应）。通过对idt和lfs的实验测量，验证了这些机制的预测能力和准确性，确保了它们准确地代表了RP-3煤油在O2/H2O环境中的燃烧性能。并与RP-3在同等条件下在空气中的燃烧性能进行了对比分析。为了揭示潜在的反应途径，采用系统敏感性分析和生产速率（ROP）诊断来研究影响idt、lfs和关键物种形成的关键反应和机制。研究了H2O在RP-3/O2/H2O燃烧过程中的作用，初步分析了不同H2O2热解气氛下RP-3煤油的燃烧特性。

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Effects of O2/H2O on RP-3 kerosene ignition and flame propagation: A combined experimental and kinetic modeling study

Understanding the spontaneous ignition and flame propagation characteristics of RP-3 kerosene in O₂/H₂O mixtures is critical for advancing chemical kinetic modeling and optimizing hydrogen peroxide (H₂O₂)/kerosene bipropellant rocket engines. This study integrates experimental measurements with kinetic modeling to systematically investigate RP-3 combustion behavior under O₂/H₂O atmospheres. Ignition delay times (IDTs) and laminar flame speeds (LFSs) of RP-3 in O₂/H₂O environments are quantified using a high-pressure shock tube (HPST) and a constant-volume combustion vessel. Two combustion mechanisms are developed for RP-3/O₂/H₂O systems, consisting of a comprehensive reaction mechanism (184 species, 1252 reactions) and a small-scale mechanism (40 species, 121 reactions). The predictive capability and accuracy of these mechanisms are validated through experimental measurements of IDTs and LFSs, ensuring their accurate representation of the combustion performance of RP-3 kerosene in O₂/H₂O environments. A comparative analysis with the combustion performance of RP-3 in air under equivalent conditions is also conducted. To unravel the underlying reaction pathways, systematic sensitivity analyses and rate-of-production (ROP) diagnostics are implemented to investigate key reactions and mechanisms affecting IDTs, LFSs, and key species formation. The role of H₂O in the combustion process of RP-3/O₂/H₂O is also investigated, and a preliminary analysis is conducted on the combustion characteristics of RP-3 kerosene under different pyrolysis atmospheres of H₂O₂.

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来源期刊

Combustion and Flame 工程技术-工程：化工

CiteScore

9.50

自引率

20.50%

发文量

631

审稿时长

3.8 months

期刊介绍： The mission of the journal is to publish high quality work from experimental, theoretical, and computational investigations on the fundamentals of combustion phenomena and closely allied matters. While submissions in all pertinent areas are welcomed, past and recent focus of the journal has been on: Development and validation of reaction kinetics, reduction of reaction mechanisms and modeling of combustion systems, including: Conventional, alternative and surrogate fuels; Pollutants; Particulate and aerosol formation and abatement; Heterogeneous processes. Experimental, theoretical, and computational studies of laminar and turbulent combustion phenomena, including: Premixed and non-premixed flames; Ignition and extinction phenomena; Flame propagation; Flame structure; Instabilities and swirl; Flame spread; Multi-phase reactants. Advances in diagnostic and computational methods in combustion, including: Measurement and simulation of scalar and vector properties; Novel techniques; State-of-the art applications. Fundamental investigations of combustion technologies and systems, including: Internal combustion engines; Gas turbines; Small- and large-scale stationary combustion and power generation; Catalytic combustion; Combustion synthesis; Combustion under extreme conditions; New concepts.