극초음속비행체용 재생냉각 미세채널 내부 초임계 n-dodecane의 흡열분해 화학반응 수치해석 연구
A Numerical Study on Endothermic Chemical Reactions of Supercritical n-dodecane in a Regenerative Cooling Channel of Hypersonic Vehicles
0
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
A numerical study has been conducted on the endothermic decomposition reactions of n-dodecane in a regenerative cooling channel by using a multi-step PPD (Proportional Product Distribution) model in order to develop a practical numerical simulation technique for analyzing and designing an active regenerative cooling system of hypersonic cruise vehicles. The PPD model includes the primary cracking which is applicable up to the fuel conversion rate of 13% while the secondary cracking which should be incorporated for the conversion rate of above 13%. Results for both the primary and secondary cracking regions show that the fuel outlet temperature is lower when the thermal cracking is considered due to the endothermic nature of the reaction. Furthermore, the predicted distributions of major gaseous and liquid products with respect to the fuel conversion rate agree very nicely with existing numerical and experimental data, which confirms the validity of the numerical technique applied in the current study.
Abstract
A numerical study has been conducted on the endothermic decomposition reactions of n-dodecane in a regenerative cooling channel by using a multi-step PPD (Proportional Product Distribution) model in order to develop a practical numerical simulation technique for analyzing and designing an active regenerative cooling system of hypersonic cruise vehicles. The PPD model includes the primary cracking which is applicable up to the fuel conversion rate of 13% while the secondary cracking which should be incorporated for the conversion rate of above 13%. Results for both the primary and secondary cracking regions show that the fuel outlet temperature is lower when the thermal cracking is considered due to the endothermic nature of the reaction. Furthermore, the predicted distributions of major gaseous and liquid products with respect to the fuel conversion rate agree very nicely with existing numerical and experimental data, which confirms the validity of the numerical technique applied in the current study.
참고문헌 (14)
- D. M. Van Wie, "Hypersonic air-breathing propul-sion", Johns Hopkins APL Technology Digest, 26(4), pp.430~437 (2005)
- M. Tang, "The quest for hypersonic flight with air-breathing propulsion", 15th AIAA International Space Planes and Hypersonic Systems and Technologies Conference, pp.2008~2546 (2008), AIAA
- National Research Council, "Review and evaluation of the air force hypersonic technology program", pp.5~17 (1998), National Academy Press
- T. Edwards, "Liquid fuels and propellants for aerospace propulsion : 1903-2003", J. Propul. Power, 19(6), pp.1089~1107 (2003)
- R. Jiang, "Thermal cracking of hydrocarbon aviation fuels in regenerative cooling microchannels", Energy Fuels, 27, pp.2563~2577 (2013)
- H. J. Lee, "Analysis of endothermic regenerative cooling technologies by using hydrocarbon aviation fuels", J. Korean Soc. Propul. Eng, 25(3), pp.113~126 (2021)
- S. Hwang, "Investigation on a prediction methodology of thermodynamic properties of supercritical hydrocarbon aviation fuels", J. ILASS-KOREA, 26(4), pp.171~181 (2021)
- S. Hwang, "Comparison and evaluation of transport property prediction performance of supercritical hydrocarbon aviation fuels and their pyrolyzed products via endothermic reactions", Energies, 16(3), pp.5195~ (2023)
- T. A. Ward, "Simulations of flowing mildly-cracked normal alkanes incorporating proportional product distributions", J. Propul. Power, 20(3), pp.394~402 (2004)
- T. A. Ward, "Pressure effects on flowing mildly-cracked n-decane", J. Propul. Power, 21(2), pp.344~355 (2005)
- D. Zhang, "Experiment and modeling on thermal cracking of n-dodecane at supercritical pressure", Energy Fuels, 32(12), pp.12426~12434 (2018)
- P. X. Jiang, "Differential global reaction model with variable stoichiometric coefficients for thermal cracking of n-decane at supercritical pressures", Energy Fuels, 33(8), pp.7244~7256 (2019)
- S. H. Lee, "A numerical study on the thermal decomposition of n-dodecane at various mass flow rate for super-critical condition in a cylindrical tube", J. Korean Soc. Combust, 26(4), pp.13~19 (2021)
- Huber, M.L, "NIST Thermophysical properties of hydrocarbon mixtures database (SUPERTRAPP)Version 3.2 User’s Guide", NIST, ~ (2007)