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2025 Vol.30, Issue 2 Preview Page

Research Article

Experimental Study for Development of Endothermic Decomposition Model of Supercritical n-Dodecane

초임계 n-dodecane의 흡열분해 화학반응 모델 개발을 위한 실험적 연구

Seung Mook Park1
,
Seung Hyeon Lee1
,
Jun Su Kang1
,
Hyung Ju Lee1†
박 승묵1
,
이 승현1
,
강 준수1
,
이 형주1†
1Department of Mechanical Engineering, Pukyong National University
1국립부경대학교 기계공학과
*Corresponding Author
30 June 2025. pp. 36-45
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Abstract

The pyrolysis characteristics of hydrocarbon aviation fuel have a significant impact on the cooling performance of active regenerative cooling systems for hypersonic vehicles and the combustion performance of scramjet engines. Therefore, this study aimed to investigate the thermal cracking characteristics of n-dodecane, the main component of hydrocarbon jet fuel, using a batch reactor experimental setup. In particular, since fuel in actual regenerative cooling channels reaches a supercritical state, experiments were conducted to allow pyrolysis at pressures of 4 MPa, temperatures ranging from 500 to 600°C, and reaction times between 100 and 220 seconds. Under these reaction conditions, the maximum fuel conversion and gas production rates were found to be approximately 80% and 42%, respectively. Furthermore, based on the experimental results, the distribution of gas and liquid products according to fuel conversion was quantitatively analyzed, and a global one-step reaction PPD(Proportional Product Distribution) model for n-dodecane was developed.

Keywords
Hypersonic cruise vehicle
Scramjet engine
Regenerative cooling system
Pyrolysis
Global reaction model
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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 :2
  • Pages :36-45
  • Received Date : 2025-03-16
  • Revised Date : 2025-06-11
  • Accepted Date : 2025-06-11
  • DOI :https://doi.org/10.15231/jksc.2025.30.2.036
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