Chin. Phys. B ›› 2013, Vol. 22 ›› Issue (4): 44701-044701.doi: 10.1088/1674-1056/22/4/044701

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Numerical and experimental study on shear coaxial injectors with hot hydrogen-rich gas/oxygen-rich gas and GH2/GO2

金平, 李茂, 蔡国飙   

  1. Beijing University of Aeronautics and Astronautics, Beijing 100191, China
  • 收稿日期:2012-06-04 修回日期:2012-10-15 出版日期:2013-03-01 发布日期:2013-03-01
  • 基金资助:
    Project supported by the National High Technology Research and Development Program of China (Grant No. 2009702504).

Numerical and experimental study on shear coaxial injectors with hot hydrogen-rich gas/oxygen-rich gas and GH2/GO2

Jin Ping (金平), Li Mao (李茂), Cai Guo-Biao (蔡国飙)   

  1. Beijing University of Aeronautics and Astronautics, Beijing 100191, China
  • Received:2012-06-04 Revised:2012-10-15 Online:2013-03-01 Published:2013-03-01
  • Contact: Li Mao E-mail:limaobuaa@hotmail.com
  • Supported by:
    Project supported by the National High Technology Research and Development Program of China (Grant No. 2009702504).

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摘要： The influences of the shear coaxial injector parameters on the combustion performance and the heat load of the combustor are studied numerically and experimentally. The injector parameters, including the ratio of the oxidizer pressure drop to the combustor pressure (DP), the velocity ratio of fuel to oxidizer (RV), the thickness (WO), and the recess (HO) of the oxidizer injector posttip, the temperature of the hydrogen-rich gas (TH) and the oxygen-rich gas (TO), are integrated by the orthogonal experimental design method to investigate the performance of the shear coaxial injector. The gaseous hydrogen/oxygen at ambient temperature (GH2/GO2), and the hot hydrogen-rich gas/oxygen-rich gas are used here. The length of the combustion (LC), the average temperatures of the combustor wall (TW), and the faceplate (TF) are selected as the indicators. The tendencies of the influences of injector parameters on the combustion performance and the heat load of the combustor for the GH2/GO2 case are similar to those in the hot propellants case. However, the combustion performance in the hot propellant case is better than that in the GH2/GO2 case, and the heat load of the combustor is also larger than that in the latter case.

关键词: gas-gas injector, combustion performance, heat load, experiment

Abstract: The influences of the shear coaxial injector parameters on the combustion performance and the heat load of the combustor are studied numerically and experimentally. The injector parameters, including the ratio of the oxidizer pressure drop to the combustor pressure (DP), the velocity ratio of fuel to oxidizer (RV), the thickness (WO), and the recess (HO) of the oxidizer injector posttip, the temperature of the hydrogen-rich gas (TH) and the oxygen-rich gas (TO), are integrated by the orthogonal experimental design method to investigate the performance of the shear coaxial injector. The gaseous hydrogen/oxygen at ambient temperature (GH2/GO2), and the hot hydrogen-rich gas/oxygen-rich gas are used here. The length of the combustion (LC), the average temperatures of the combustor wall (TW), and the faceplate (TF) are selected as the indicators. The tendencies of the influences of injector parameters on the combustion performance and the heat load of the combustor for the GH2/GO2 case are similar to those in the hot propellants case. However, the combustion performance in the hot propellant case is better than that in the GH2/GO2 case, and the heat load of the combustor is also larger than that in the latter case.

Key words: gas-gas injector, combustion performance, heat load, experiment

中图分类号:  (Flames; combustion)

  • 47.70.Pq
47.54.De (Experimental aspects) 44.05.+e (Analytical and numerical techniques)