| 摘要: |
| 真实航空燃料通常包含几十至上百种组分，直接构建其化学反应动力学模型十分困难。本文利用官能团相似法（SCFG），结合实测RP-3航空煤油组分比例，提出了RP-3四组分模型替代物。利用流动反应器，获得了温度为550~1150K，压力为0.1 MPa下RP-3热解数据，基于化学杂化方法（Hybrid Chemistry），构建了以真实RP-3为单一原始组分的航空煤油化学反应动力学模型（XJTURP3-2021），模型得到宏观点火延迟、层流火焰速度以及微观组分浓度系统验证。基于误差传递的直接关系图法（DRGEP）和全局敏感性分析（FSSA）对模型进行简化，获得含41种组分、212个基元反应的RP-3简化模型（XJTURP3r-2021）。与详细模型和实验数据对比发现，XJTURP3r-2021能较好地复现热力边界对RP-3基础燃烧特征影响规律，为解决CFD仿真对反应源项初始组分数量约束和计算精度固有矛盾提供新思路。 |
| 关键词: RP-3航空煤油 SCFG方法 HyChem方法 机理简化 化学反应动力学模型 |
| DOI：10.13675/j.cnki.tjjs.210885 |
| 分类号:V231.1 |
| 基金项目:国家科技重大专项（J2019-III-0004-0047）；中国航发四川燃气涡轮研究院外委课题（KTZX-030120210007）；航空等离子体动力学国防科技重点实验室开放基金（614220220200103）。 |
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| Construction of Simplified Reaction Kinetic Model of RP-3 Aviation Kerosene Based on a Composed Method of Hybrid Chemistry and Similarity Criterion of Function Group |
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HONG Cong-jie1, ZHANG Yu-yang1, ZHAN Hao-chen1, LIU Jing1, QUAN Yong-kai2, HUI Xin2, XU Guo-qiang2, LIN Yu-zhen2, KANG Yu-dong3, ZHOU Xiong3, DENG Yuan-hao3, HU Er-jiang1, HUANG Zuo-hua1, ZHANG Ying-jia1
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1.State Key Laboratory of Multiphase Flow in Power Engineering,Xi’an Jiaotong University,Xi’an 710049,China;2.Research Institute of Aero-Engine,Beihang University,Beijing 100191,China;3.AECC Sichuan Gas Turbine Establishment ,Chengdu 610500,China
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| Abstract: |
| Commercial aviation fuel usually contains dozens to hundreds of hydrocarbon components， which makes it extremely difficult to directly construct reliable chemical kinetic model. In this study， a four-component surrogate model fuel based on the similarity criterion of function group （SCFG） was proposed， combined with the measured aviation kerosene （RP-3） component ratio. Pyrolysis data of RP-3 were obtained at initial pressure of 0.1MPa and at temperatures of 550~1100K in a flow reactor. A detailed reaction kinetic model （XJTURP3-2021） with the commercial RP-3 as a single original component was constructed based on the hybrid chemistry approach， and has been well validated by diverse fundamental parameters including ignition delay time， laminar burning velocity and species concentration. A simplified kinetic model （XJTURP3r-2021） with 41 species and 212 reactions was then obtained by using Directed Relation Graph with Error Propagation （DRGEP） and Full Species Sensitivity Analysis （FSSA） based on the XJTURP3-2021 model. Compared with both the detailed model and the experimental data， the simplified model （XJTURP3r-2021） can well reproduce the influence of thermal boundary parameters on basic combustion characteristics of RP-3. This study in general， provides a new way to solve the inherent contradiction between the constraint of initial component number of reaction source term and calculation accuracy in CFD simulation. |
| Key words: RP-3 aviation kerosene SCFG method HyChem method Mechanism simplification Chemical reaction kinetics model |
