The influence of heat transfer and friction on the impulse of a detonation tube

Ko Kawane, Satoshi Shimada, Jiro Kasahara, Akiko Matsuo

研究成果: Article査読

29 被引用数 (Scopus)

抄録

In the present study, we experimentally and numerically investigated the influence of heat transfer and friction on the performance of a single-shot detonation tube open at one end. Two kinds of specific impulse measurement were carried out with various tube lengths and levels of surface roughness, one by using a ballistic pendulum arrangement and the other by integrating the pressure history measured at the thrust wall. These measurements revealed the degree to which potential impulse can be exploited by the detonation tube after the impulse losses due to various wall loss mechanisms such as heat transfer and friction. The detonation tube obtained 89%, 70%, and 64% of the theoretical ideal impulse for electropolished tubes at a ratio of tube length to diameter (L/. D) of 49, 103, and 151, respectively. The impulse losses due to shear stress on the side wall of the detonation tube were found to have a dominant influence on the performance of the detonation tubes of L/. D= 103 and 151, but the loss was remarkably small for L/. D= 49 relative to that of the longer tubes. In addition to the experiments, a simplified one-dimensional gas-dynamic model was developed by considering heat transfer and friction as wall loss mechanisms and validated by the experimental results. This simplified model was found to predict the experimental results very well, especially in the range of L/. D 103-151.

本文言語English
ページ(範囲)2023-2036
ページ数14
ジャーナルCombustion and Flame
158
10
DOI
出版ステータスPublished - 2011 10月

ASJC Scopus subject areas

  • 化学 (全般)
  • 化学工学(全般)
  • 燃料技術
  • エネルギー工学および電力技術
  • 物理学および天文学(全般)

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