Chin. Phys. B ›› 2012, Vol. 21 ›› Issue (12): 124501-124501.doi: 10.1088/1674-1056/21/12/124501

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

Statistical model for combustion of high-metal magnesium-based hydro-reactive fuel

胡建新, 韩超, 夏智勋, 黄利亚, 黄序   

  1. College of Aerospace and Materials Engineering, National University of Defense Technology, Changsha 410073, China
  • 收稿日期:2012-05-15 修回日期:2012-07-06 出版日期:2012-11-01 发布日期:2012-11-01
  • 基金资助:
    Project supported by the Young Scientist Fund of the National Natural Science Foundation of China (Grant No. 51006118).

Statistical model for combustion of high-metal magnesium-based hydro-reactive fuel

Hu Jian-Xin (胡建新), Han Chao (韩超), Xia Zhi-Xun (夏智勋), Huang Li-Ya (黄利亚), Huang Xu (黄序)   

  1. College of Aerospace and Materials Engineering, National University of Defense Technology, Changsha 410073, China
  • Received:2012-05-15 Revised:2012-07-06 Online:2012-11-01 Published:2012-11-01
  • Contact: Hu Jian-Xin E-mail:uoyevolun@hotmail.com
  • Supported by:
    Project supported by the Young Scientist Fund of the National Natural Science Foundation of China (Grant No. 51006118).

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摘要： We investigate experimentally and analytically the combustion behavior of a high-metal magnesium-based hydro-reactive fuel under high temperature gaseous atmosphere. The fuel studied in this paper contains 73% magnesium powders. An experimental system is designed and experiments are carried out in both argon and water vapor atmospheres. It is found that the burning surface temperature of the fuel is higher in water vapor than that in argon and both of them are higher than the melting point of magnesium, which indicates the molten state of magnesium particles in the burning surface of the fuel. Based on physical considerations and experimental results a mathematical one-dimensional model is formulated to describe the combustion behavior of the high-metal magnesium-based hydro-reactive fuel. The model enables the evaluation of the burning surface temperature, the burning rate and the flame standoff distance each as a function of chamber pressure and water vapor concentration. The results predicted by the model show that the burning rate and the surface temperature increase when the chamber pressure and the water vapor concentration increase, which are in agreement with the observed experimental trends.

关键词: high-metal magnesium-based hydro-reactive fuel, water ramjet engine, combustion experiment, combustion model

Abstract: We investigate experimentally and analytically the combustion behavior of a high-metal magnesium-based hydro-reactive fuel under high temperature gaseous atmosphere. The fuel studied in this paper contains 73% magnesium powders. An experimental system is designed and experiments are carried out in both argon and water vapor atmospheres. It is found that the burning surface temperature of the fuel is higher in water vapor than that in argon and both of them are higher than the melting point of magnesium, which indicates the molten state of magnesium particles in the burning surface of the fuel. Based on physical considerations and experimental results a mathematical one-dimensional model is formulated to describe the combustion behavior of the high-metal magnesium-based hydro-reactive fuel. The model enables the evaluation of the burning surface temperature, the burning rate and the flame standoff distance each as a function of chamber pressure and water vapor concentration. The results predicted by the model show that the burning rate and the surface temperature increase when the chamber pressure and the water vapor concentration increase, which are in agreement with the observed experimental trends.

Key words: high-metal magnesium-based hydro-reactive fuel, water ramjet engine, combustion experiment, combustion model

中图分类号:  (Ballistics (projectiles; rockets))

  • 45.40.Gj
47.70.Pq (Flames; combustion) 82.33.Vx (Reactions in flames, combustion, and explosions)