Exploring the two-stage ignition of n-butylcyclohexane: A comprehensive experimental and modeling study

作者：Congjie Hong, Y.G Zhang, Xi Zhang, Wuchuan Sun, Qianqian Li, Zuohua Huang, Janardhanraj Subburaj, Aamir Farooq, Zeimin Tian, Yingwen Yan, Jintao Wang, Yuanhao Deng, Shilin Zhong, Shilin Zhong · 发表于：Combustion and Flame · 年份：2025 · DOI：10.1016/j.combustflame.2025.114047 · 被引用次数：4 · 研究领域：Advanced Combustion Engine Technologies、Combustion and flame dynamics、Combustion and Detonation Processes

n -Butylcyclohexane (NBCH) serves as a representative surrogate fuel in investigations concerning the combustion characteristics of both jet fuels and sustainable aviation fuels . Understanding its combustion behavior and developing high-fidelity chemical reaction kinetic models are crucial for fuel performance optimization. In this study , a comprehensive investigation of the oxidation kinetics of NBCH under low-temperature conditions was conducted and a novel experimental dataset including both total and first-stage ignition delay times was proposed. A broad range of experimental conditions was investigated, spanning temperatures from 675 - 1300 K and pressures from 5 - 20 atm, under pure oxygen and air conditions, thereby providing valuable data for numerical validation. An updated chemical kinetic model was developed by integrating the comprehensive core mechanism of NUIGMech 1.3 and 30 fuel layer reaction classes. The proposed model corrected errors in the rate coefficients of key reaction classes identified in previous literature and incorporated the latest rate coefficients from theoretical calculations for specific reaction classes, demonstrating superior performance compared to literature models in accurately predicting the first-stage and total ignition delay times under various operating conditions. Additionally, the model performance was assessed through comparisons with various datasets sourced from the literature. The results showed that the updated model provid...