Effects of Pyrolysis Products on Ignition Delay Time of an Endothermic Fuel at Low Pressure

Yejin Kang; Jiwung Choi; Jihwan Seong; Chae Hoon Sohn; Byunghun Jeong; Dongchang Park

doi:10.15231/jksc.2025.30.1.050

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2025 Vol.30, Issue 1 Preview Page Next Page

Research Article

Effects of Pyrolysis Products on Ignition Delay Time of an Endothermic Fuel at Low Pressure 저압 조건에서 흡열연료의 점화지연시간에 미치는 열분해 생성물의 효과

31 March 2025. pp. 50-56

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Abstract

An endothermic fuel can be used as a coolant flowing through a cooling channel to prevent a combustor wall from being heated as it absorbs additional heat through its endothermic reaction in addition to sensible heat absorption. Experiments and numerical simulations were conducted to analyze the ignition characteristics of a pyrolyzed fuel after it is injected into the combustion chamber. For this purpose, ignition delay time of the endothermic fuel, called TF-10, was measured at pressures close to operating conditions in a supersonic propulsion system, by using a constant-volume combustion chamber(CRU) and a shock tube. And, effects of pyrolysis products on ignition characteristics were also evaluated. TF-10 was found to exhibit greater pressure dependency and longer ignition delay times than Jet-A1. Among the pyrolysis products, ethylene(C₂H₄) was identified as a key species promoting ignition of TF-10. From sensitivity analyses, it is found that the specific reactions steps contribute to ignition acceleration of the mixture of TF-10 and ethylene.

Keywords

Endothermic fuel

Ignition delay times

Pyrolysis products

Sensitivity analysis

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Information

Publisher :The Korean Society of Combustion
Publisher(Ko) :한국연소학회
Journal Title :Journal of the Korean Society of Combustion
Journal Title(Ko) :한국연소학회지
Volume : 30
No :1
Pages :50-56
Received Date : 2025-01-17
Revised Date : 2025-02-10
Accepted Date : 2025-02-12
DOI :https://doi.org/10.15231/jksc.2025.30.1.050

Journal of the Korean Society of Combustion ISSN:1226-0959(Print) 2466-2089(Online) 한국연소학회지

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