超临界压力下RP-3航空煤油吸热裂解反应的数值研究

doi:10.7527/S1000-6893.2013.0547

Abstract

Abstract:

In order to understand the thermal cracking characteristic of hydrocarbon fuel under supercritical pressure in the regenerative cooling progress, a numerical study on the thermal cracking of RP-3 aviation kerosene under 5 MPa is conducted based on a four-species surrogate model of RP-3. A modified Kumar-Kunzru model consisting of 18 species and 24 reactions is used to simulate the cracking process. The effect of thermal cracking on the thermophysical properties and heat transfer of the fluid is investigated. The effect of secondary reactions on the thermal cracking of RP-3 aviation kerosene is also studied at high conversion of RP-3. Numerical results show that the conversion of RP-3 is higher than 20% with a relative proportion of aromatics of 12.1% once the fluid temperature reaches 890 K. The thermophysical properties of the fluid change obviously when the thermal cracking of RP-3 occurs. The wall temperature and fluid temperature decrease by 130 K and 129 K respectively at the tube outlet. Meanwhile, the Nusselt number increases by 16.5%, indicating that the heat transfer is enhanced. The secondary reactions affect the thermal cracking of RP-3 obviously at high conversion. It is found that the conversion of RP-3 with secondary reactions is 29.1% lower than that without secondary reactions. Meanwhile, the wall temperature and fluid temperature decrease by 34 K and 22 K respectively at the tube outlet.

Key words: supercritical pressure, RP-3 aviation kerosene, thermal cracking, secondary reaction, regenerative cooling

CLC Number:

V312⁺.1

ZHAO Guozhu, SONG Wenyan, ZHANG Ruoling. Numerical Study on Thermal Cracking of RP-3 Aviation Kerosene Under Supercritical Pressure[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2014, 35(6): 1513-1521.

References

[1] Edwards T. Liquid fuels and propellants for aerospace propulsion: 1903-2003[J]. Journal of Propulsion and Power, 2003, 19(6): 1089-1107.

[2] Jackson T A, Eklund D R, Fink A J. High speed propul-sion performance advantage of advanced materials[J]. Journal of Materials Science, 2004, 39(19): 5905-5913.

[3] Edwards T. Cracking and deposition behavior of super-critical hydrocarbon aviation fuels[J]. Combustion Sci-ence and Technology, 2006, 178(1-3): 307-334.

[4] Yu J, Eser S. Kinetics of supercritical-phase thermal decomposition of C₁₀-C₁₄ normal alkanes and their mixtures[J]. Industrial & Engineering Chemistry Research, 1997, 36(3): 585-591.

[5] Yu J, Eser S. Thermal decomposition of C₁₀-C₁₄ normal alkanes in near-critical and supercritical regions: product distributions and reaction mechanisms[J]. Industrial & Engineering Chemistry Research, 1997, 36(3): 574-584.

[6] Sheu J C, Zhou N, Krishnan A. Thermal cracking of norpar-13 under near-critical and supercritical conditions, AIAA-1998-3758. Reston: AIAA, 1998.

[7] Zhong F Q, Fan X J, Yu G, et al. Thermal cracking of aviation kerosene for scramjet applications[J]. Science in China Series E: Technological Sciences, 2009, 52(9): 2644-2652.

[8] Zhong F Q, Fan X J, Yu G, et al. Heat transfer of avia-tion kerosene at supercritical conditions[J]. Journal of Thermophysics and Heat Transfer, 2009, 23(3): 543-550.

[9] Ward T A, Ervin J S, Striebich R C, et al. Simulations of flowing mildly-cracked normal alkanes incorporating proportional product distributions[J]. Journal of Propulsion and Power, 2004, 20(3): 394-402.

[10] Ward T A. Physical and chemical behavior of flowing endothermic jet fuels. Dayton: Department of Mechanical and Aerospace Engineering, University of Dayton, 2003.

[11] Bao W, Li X, Qin J, et al. Efficient utilization of heat sink of hydrocarbon fuel for regeneratively cooled scramjet[J]. Applied Thermal Engineering, 2011, 33-34: 208-218.

[12] Ruan B, Meng H. Numerical model development and validation for hydrocarbon fuel supercritical heat transfer with endothermic pyrolysis[J]. Acta Aeronautica et Astronautica Sinica, 2011, 32(12): 2220-2226. (in Chinese) 阮波, 孟华. 碳氢燃料裂解吸热反应及超临界传热现象数值模型的构建与验证[J]. 航空学报, 2011, 32(12): 2220-2226.

[13] Jiang R P, Liu G Z, Zhang X W, et al. Thermal cracking of hydrocarbon aviation fuels in regenerative cooling microchannels[J]. Energy & Fuels, 2013, 27(5): 2563-2577.

[14] Zhao H Y. Parallel numerical study of whole scramjet engine. Mianyang: China Aerodynamics Research and Development Center, 2005. (in Chinese) 赵慧勇. 超燃冲压整体发动机并行数值研究. 绵阳: 中国空气动力研究与发展中心, 2005.

[15] Menter F R. Two-equation eddy-viscosity turbulence models for engineering applications[J]. AIAA Journal, 1994, 32(8): 1598-1605.

[16] Wilcox D C. Reassessment of the scale determining equation for advanced turbulence models[J]. AIAA Journal, 1988, 26(11): 1299-1310.

[17] Tong J S, Li J. Computation of fluid thermophysical properties[M]. Beijing: Tsinghua University Press, 1982: 58-281. (in Chinese) 童景山, 李敬. 流体热物理性质的计算[M]. 北京: 清华大学出版社, 1982: 58-281.

[18] Zhang L, Le J L, Zhang R L, et al. Heat transfer of hy-drocarbon fuel in turbulent flow region under supercritical pressure[J]. Journal of Propulsion Technology, 2013, 34(2): 225-229. (in Chinese) 张磊, 乐嘉陵, 张若凌, 等. 超临界压力下湍流区碳氢燃料传热研究[J]. 推进技术, 2013, 34(2): 225-229.

[19] Tao W Q. Numerical heat transfer[M]. 2rd ed. Xi'an: Xi'an Jiaotong University Press, 2001: 195-211. (in Chinese) 陶文铨. 数值传热学[M]. 2版. 西安: 西安交通大学出版社, 2001: 195-211.

[20] Andresen J M, Strohm J J, Sun L, et al. Relationship between the formation of aromatic compounds and solid deposition during thermal degradation of jet fuels in the pyrolytic regime[J]. Energy & Fuels, 2001, 15(3): 714-723.

[21] Edwards T, Anderson S D. Results of high temperature JP-7 cracking assessment//Proceedings of the 31st Aerospace Sciences Meeting and Exhibit. Reston: AIAA, 1993.

Numerical Study on Thermal Cracking of RP-3 Aviation Kerosene Under Supercritical Pressure

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