Detonation Wave Combustion Characteristic by Fuel of Pre-Detonator

Yuchang Gil; Sangho Ko; Saeyan Park; Sungwoo Park

doi:10.6108/KSPE.2025.29.3.037

All Issue

2025 Vol.29, Issue 3 Preview Page Next Page

TECHNICAL PAPERS

Detonation Wave Combustion Characteristic by Fuel of Pre-Detonator Pre-Detonator의 연료에 따른 데토네이션파 연소특성

30 June 2025. pp. 37-44

PDF XML

Abstract

This study experimentally investigated detonation wave characteristics in a Pre-detonator using C₂H₂ and CH₄ fuels. With O₂ as the oxidizer, experiments were conducted at equivalence ratios of 0.6–1.6 using high-speed imaging, Schlieren methods, and pressure transducers. CH₄ showed distinct developing and fully developed regions, with shorter transition distances at higher equivalence ratios. In contrast, C₂H₂ rapidly reached a fully developed detonation state immediately after passing through the DDT device, exhibiting a critical regime–sub-critical outcome. Detonation wave velocities were also quantified using diagnostic data. These findings offer fundamental insights for optimizing Pre-detonator design based on fuel-dependent detonation behavior.

Keywords

Detonation Wave

Pre-detonator

Rotating Detonation Engine

Combustion Visualization

본 연구는 Pre-detonator에서 연료(C₂H₂, CH₄)에 따른 데토네이션파 특성을 실험적으로 분석하였다. O₂ 산화제, 당량비 0.6~1.6 조건에서 슐리렌, 동압, 초고속 카메라를 활용해 DDT 및 파 발달을 관찰하였다. C₂H₂는 DDT 직후 완전 발달하였고, CH₄는 당량비 증가에 따라 발달 길이가 감소하였다. 본 연구는 연료 특성에 따른 DDT 경향을 확인하고 설계 최적화에 기초 데이터를 제공하고자 한다.

키워드

데토네이션파

데토네이션 점화기

선회형 데토네이션 엔진

연소 가시화

References

Ahmed, A., Goteng, G., Shankar, V.S.B., Al-Qurashi, K., Roberts, W.L. and Sarathy, S.M., "A computational methodology for formulating gasoline surrogate fuels with accurate physical and chemical kinetic properties," Fuel, Vol. 143, pp. 290-300, 2015.

10.1016/j.fuel.2014.11.022

Dunn, I.B., Malik, V., Flores, W., Morales, A. and Ahmed, K.A., "Experimental and theoretical analysis of carbon driven detonation waves in a heterogeneously premixed Rotating Detonation Engine," Fuel, Vol. 302, p. 121128, 2021.

10.1016/j.fuel.2021.121128

Qi, L., Dong, J., Hong, W., Wang, M. and Lu, T., "Investigation of rotating detonation gas turbine cycle under design and off-design conditions," Energy, Vol. 264, p. 126212, 2023.

10.1016/j.energy.2022.126212

Xia, Z., Sheng, Z., Shen, D. and Wang, J., "Numerical investigation of pre-detonator in rotating detonation engine," International Journal of Hydrogen Energy, Vol. 46, No. 61, pp. 31428-31438, 2021.

10.1016/j.ijhydene.2021.07.013

Lei, Q., Zhao, X., Zheng, J., He, J., Wang, K. and Fan, W., "Role of overdriven state of ignition wave in pre-detonators on detonation transition modes in a flat chamber," Aerospace Science and Technology, Vol. 115, pp. 106771, 2021.

10.1016/j.ast.2021.106771

Shi, X., Pan, J., Li, J., Jiang, C., Zhu, Y. and Quaye, E.K., "Effect of obstacles behind the pre-detonator tube on the re-initiation of diffracted detonation wave," International Journal of Hydrogen Energy, Vol. 48, No. 12, pp. 4860-4874, 2023.

10.1016/j.ijhydene.2022.11.012

Lee, K., Kim, M., Choi, J. and Yu, K.H., "An Experimental Investigation of Low-Frequency Active Excitation in Scramjet Combustor Using a Micro- Pulse Detonation Engine," Aerospace, Vol. 11, No. 7, 2024.

10.3390/aerospace11070559

Chen, Z. and Wu, M., "Gas Dynamics in the Inlets of a Valveless Micro Pulse Detonation Engine," 2015.

Gavrikov, A.I., Efimenko, A.A. and Dorofeev, S.B., "A model for detonation cell size prediction from chemical kinetics," Combustion and Flame, Vol. 120, No. 1, pp. 19-33, 2000.

10.1016/S0010-2180(99)00076-0

Bull, D.C., Elsworth, J.E., Shuff, P.J. and Metcalfe, E. (1982). "Detonation cell structures in fuel/air mixtures," Combustion and Flame, Vol. 45, pp. 7-22.

10.1016/0010-2180(82)90028-1

Dove, J.E. and Wagner, H.G., "A photographic investigation of the mechanism of spinning detonation," Symposium (International) on Combustion, Vol. 8, No. 1, pp. 589-600, 1961.

10.1016/S0082-0784(06)80550-3

Pantow, E.G., Fischer, M. and Kratzel, T. "Decoupling and recoupling of detonation waves associated with sudden expansion," Shock Waves, Vol. 6, pp. 131-137, 1996.

10.1007/s001930050029

Pintgen, F. and Shepherd, J.E., "Detonation diffraction in gases," Combustion and Flame, Vol. 156, No. 3, pp. 665-677, 2009.

10.1016/j.combustflame.2008.09.008

Information

Publisher :The Korean Society of Propulsion Engineers
Publisher(Ko) :한국추진공학회
Journal Title :Journal of the Korean Society of Propulsion Engineers
Journal Title(Ko) :한국추진공학회지
Volume : 29
No :3
Pages :37-44
Received Date : 2024-12-16
Revised Date : 2025-03-07
Accepted Date : 2025-03-16
DOI :https://doi.org/10.6108/KSPE.2025.29.3.037

Journal of the Korean Society of Propulsion Engineers ISSN:1226-6027(Print) 2288-4548(Online) 한국추진공학회지

All Issue