掺氢比对微波瓣燃烧器燃烧特性的影响

doi:10.13675/j.cnki. tjjs. 180611

推进技术 ›› 2019, Vol. 40 ›› Issue (8): 1850-1860.DOI: 10.13675/j.cnki. tjjs. 180611

掺氢比对微波瓣燃烧器燃烧特性的影响

重庆大学汽车工程学院，重庆 400044

发布日期:2021-08-15
基金资助:
重庆市基础与前沿研究计划 cstc2013jcyjA00020;中央高校基本科研业务费 0209005206007重庆市基础与前沿研究计划（cstc2013jcyjA00020）；中央高校基本科研业务费（0209005206007）。

Effects of Hydrogen Blending Ratio on CombustionCharacteristics of Micro-Lobed Burner

School of Automotive Engineering,Chongqing University,Chongqing 400044,China

Published:2021-08-15

摘要/Abstract

摘要： 为解决微尺度非预混燃烧中燃料同氧化剂混合慢、燃烧不稳定的问题，基于实验的方法研究了燃料掺氢以及微波瓣燃烧器对燃烧的影响，并将微波瓣燃烧器的燃烧温度同微圆管燃烧器进行了对比。在此基础上建立了微波瓣燃烧器以及微圆管燃烧器的三维仿真模型，研究了掺氢比对微波瓣燃烧器和微圆管燃烧器流场、火焰长度、燃料消耗率、燃烧产物以及燃烧温度的影响。研究结果表明：随着掺氢比的增加，微波瓣燃烧器中流向涡涡量以及射流核心速度不断提高，火焰长度、燃烧温度不断增加，OH，H₂O质量分数的峰值逐渐增加，CO₂质量分数的峰值不断下降，CO质量分数峰值变化极小。在同一掺氢比下，相比于微圆管燃烧器，微波瓣燃烧器能够使燃料同氧化剂提前反应且具备更长的火焰、更大的OH质量分数峰值以及更高的燃烧效率和燃烧温度。在掺氢比为50%时，微波瓣燃烧器的最高燃烧温度较微圆管燃烧器提高了110K。这表明微波瓣燃烧器和燃料掺氢的结合能促进微尺度燃烧，提高燃烧的稳定性。

关键词: 微波瓣燃烧器;掺氢比;流向涡;燃烧特性;温度分布

Abstract: The effects of hydrogen blending and micro lobed burner on the micro non-premixed combustion were studied by experiment to solve the slow mixing between fuel and oxidant and unsteady combustion in the micro combustion. Moreover, the combustion temperatures of micro lobed burner were compared with the ones of micro splitter burner. Based on the experiment, three-dimensional simulation model of micro lobed burner and micro splitter burner was established to research the effects of hydrogen blending ratio on flow field, flame length, fuel consumption ratio, combustion products and temperature in the micro combustion systems. The results show that as the hydrogen blending ratio increases, the streamwise vorticity, jet velocity, flame length and combustion temperature in the micro lobed combustion system increase. Moreover, when the hydrogen blending ratio goes up, the maximum of mass fraction of OH and H₂O in the micro lobed combustion system increase, the maximum of mass fraction of CO₂ gradually falls down, the maximum of mass fraction of CO nearly does not change. In the same hydrogen blending ratio, the micro lobed burner can make the fuel react with the oxygen earlier than the micro splitter burner. Moreover, the micro lobed burner has longer flame, bigger maximum of mass fraction of OH and higher combustion efficiency and temperature than the micro splitter burner. When the hydrogen blending ratio is 50%, the max combustion temperature of micro lobed burner is 110K higher than the one of micro splitter burner. This shows that the combination of micro lobed burner and hydrogen blending can strenghten the micro-scale combustion and improve its stability.

Key words: Micro lobed burner;Hydrogen blending ratio;Streamwise vortices;Combustion characteristics;Temperature distribution

. 掺氢比对微波瓣燃烧器燃烧特性的影响[J]. 推进技术, 2019, 40(8): 1850-1860.

参考文献

[1] Epstein A H, Senturia S D， Al-Midani O， et al. Micro-heat Engines， Turbines Gas， and Rocket Engines—the MIT Microengine Project[R]. AIAA 97-1773，
[2] Isomura K， Tanaka S， Togo S， et al. Development of High-Speed Micro-Gas Bearings for Three-Dimensional Micro-Turbo Machines[J]. Journal of Micromechanics and Microengineering， 2005， 15(9).
[3] Maruta K， Takeda K， Sitzki L， et al. Catalytic Combustion in Microchannel for MEMS Power Generation[C]. Seoul:The 3rd Asia-Pacific Conference on Combustion， 2001.
[4] Sitzki L， Borer K， Wussow S， et al. Combustion in Microscale Heat-Recirculating Burners[R]. AIAA2001-1087.
[5] Wu M， Wang Y， Yang V， et al. Combustion in Meso-Scale Vortex Chambers[J]. Proceedings of the Combustion Institute， 2007， 31(2): 3235-3242.
[6] Aravind B， Khandelwal B， Kumar S. Experimental Investigations on a New High Intensity Dual Microcombustor Based Thermoelectric Micropower Generator[J]. Applied Energy， 2018， 228(10): 1173-1181.
[7] 许艺鸣，单春贤，唐爱坤，等. 微型燃烧器内掺氢甲烷燃烧特性的数值模拟[J]. 机械工程学报， 2015， 51(18): 151-157.
[8] Gao J， Hossain A， Nakamura Y. Flame Base Structures of Micro-Jet Hydrogen/Methane Diffusion Flames[J]. Proceedings of the Combustion Institute， 2017， 36(3): 4209-4216.
[9] 周明月. 微圆管内氢气和烷烃预混催化燃烧特性实验研究[D]. 杭州:浙江大学， 2016.
[10] Paterson R W. Turbofan Mixer Nozzle Flow of a Mixer Nozzle Flow Field-a Benchmark Experimental Study[J]. Journal of Engineering for Gas Turbines and Power， 1984， 106(3): 692-698.
[11] Skebe S A， Paterson R W， Baber T J. Experimental Investigation of Three-Dimensional Forced Mixer Lobe Flow Field[C]. Cincinnati: The 1st National Fluid Dynamics Conference， 1988.
[12] 陆斌，张靖周，单勇，等. 波瓣强迫混合器掺混及燃烧模型实验[J]. 南京航天航天大学学报， 2017， 49(3): 370-375.
[13] 刘联胜，李自臻，田亮，等. 基于波瓣旋流燃烧器的甲烷燃烧污染物排放特性[J]. 燃烧科学与技术， 2018， 24(3): 208-213.
[14] 刘友宏，杜力伟. 新型热混合效率公式及其在一体化加力燃烧室中的应用[J]. 推进技术， 2018， 39(7): 1515-1522. (LIU You-hong， DU Li-wei. A New Thermal Mixing Efficiency Formula and Its Application in Integrated Afterburner[J]. Journal of Power Propulsion Technology， 2018， 39(7): 1515-1522.)
[15] Sheng Z Q. Jet Mixing of Lobed Nozzles with Spoilers Located at Lobe Peaks[J]. Applied Thermal Engineering， 2017， 119(6): 165-175.
[16] Cooper N J， Merati P， Hu H. Numerical Simulation of the Vortical Structures in a Lobed Jet Mixing Flow[R]. AIAA2005-635.
[17] Smith G P， Golden D M， Frenklach M， et al. GRI-Mech3.0[EB/OL]. https://www.me.berkeley.edu/gri_mech/， 1999-03-12.
[18] 谢翌，钟晨，阮登芳，等. 微波瓣燃烧器的燃烧特性[J]. 东北大学学报(自然科学版)， 2017， 38(4): 536-541.
[19] Peters N， Kee R J. Computation of Stretched Laminar Methane-Air Diffusion Flames Using a Reduced-Four Step Mechanism[J]. Combustion and Flame， 1987， 68(1): 17-29.

掺氢比对微波瓣燃烧器燃烧特性的影响

Effects of Hydrogen Blending Ratio on CombustionCharacteristics of Micro-Lobed Burner

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 0

编辑推荐

Metrics

本文评价