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ALUMINUM PARTICLE COMBUSTION IN HIGH-SPEED DETONATION PRODUCTS

机译:高速爆轰产物中的铝颗粒燃烧

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摘要

Aluminum particles ranging from 2 to 100 fun were subjected to the flow of detonation products of a stoichiometric mixture of hydrogen and oxygen at atmospheric pressure. Luminosity emitted from the reacting particles was used to determine the reaction delay and duration. The reaction duration was found to increase as d" with n ≈ 0.5, which is more consistent with kinetically controlled reaction rather than the classical diffusion-controlled regime. Emission spectroscopy was used to estimate the combustion temperature, which was found to be well below the flow temperature. This fact also suggests combustion in the kinetic regime. Finally, the flow field was modeled with a CFD code, and the results were used to model analytically the behavior of the aluminum particles.
机译:在大气压下,使2至100 fun的铝颗粒经受氢气和氧气的化学计量混合物的爆轰产物的作用。从反应粒子发出的光度用于确定反应延迟和持续时间。发现反应持续时间随着d“的增加而增加,n≈0.5,这与动力学控制反应而不是经典的扩散控制方案更加一致。使用发射光谱法估算燃烧温度,发现燃烧温度远低于燃烧温度。这个事实也暗示了动力学状态下的燃烧,最后,用CFD代码对流场进行了建模,并将结果用于对铝颗粒的行为进行分析建模。

著录项

  • 来源
    《Combustion Science and Technology》 |2009年第6期|670-694|共25页
  • 作者单位

    Defence Research & Development Canada-Valcartier, Quebec, Canada;

    Department of Mechanical Engineering, McGill University, Montreal, Canada;

    Department of Mechanical Engineering, McGill University, Montreal, Canada;

    Defence Research & Development Canada Suffield, Medicine Hat, Canada;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    aluminum; combustion; detonation; ignition;

    机译:铝;燃烧;爆炸点火;
  • 入库时间 2022-08-18 00:12:23

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