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Experimental Investigation of the Influence of Highly Argon Dilution on the Critical Initiation Energy for Direct Initiation of C2H2-2.5O2 Mixtures
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Bo ZHANG1, John H S Lee2, Chun-Hua BAI1
Chinese Journal of High Pressure Physics | 2012, 26(1) : 55 - 62
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Chinese Journal of High Pressure Physics | 2012, 26(1): 55-62
Experimental Investigation of the Influence of Highly Argon Dilution on the Critical Initiation Energy for Direct Initiation of C2H2-2.5O2 Mixtures
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Bo ZHANG1, John H S Lee2, Chun-Hua BAI1
Affiliations
  • 1.State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China
  • 2.Department of Mechanical Engineering, McGill University, Montreal H3A 2K6, Canada
Published: 2012-02-15
Outline
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Direct initiation is achieved via a high voltage capacitor spark discharge, and the critical energy is accurately estimated from the analysis of the current output. A good agreement is found by comparing the critical initiation energy from experimental measurement and Lee's surface energy model. The influences of highly argon dilution on the critical energy of direct initiation are investigated experimentally for C2H2-2.5O2 and 70% argon diluted C2H2-2.5O2 mixtures. The results show that the critical energy is inversely exponential to the initial pressure for C2H2-2.5O2 mixtures with and without highly argon. Both the experimental and theoretical results indicate that dilution of highly argon in C2H2-2.5O2 enhances the critical initiation energy for direct initiation at the same initial condition. Since the critical initiation energy is proportional to the cube of ZND induction zone length, the dilution of highly argon increases the ZND induction zone length of C2H2-2.5O2 mixture under the same initial pressure, and accordingly the critical initiation energy is raised remarkably.

direct initiation  /  critical initiation energy  /  induction length  /  spark ignition  /  argon
张博, John H S Lee, 白春华. 高浓度氩气稀释对C2H2-2.5O2气体直接起爆临界能量影响的实验研究. 高压物理学报, 2012 , 26 (1) : 55 -62 .
Bo ZHANG, John H S Lee, Chun-Hua BAI. Experimental Investigation of the Influence of Highly Argon Dilution on the Critical Initiation Energy for Direct Initiation of C2H2-2.5O2 Mixtures[J]. Chinese Journal of High Pressure Physics, 2012 , 26 (1) : 55 -62 .
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Year 2012 volume 26 Issue 1
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Article Info
  • Receive Date：2010-07-13
  • Online Date：2026-11-05
  • Published：2012-02-15
Article Data
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History
  • Received：2010-07-13
  • Revised：2010-08-16
Funding
Affiliations
    1.State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China
    2.Department of Mechanical Engineering, McGill University, Montreal H3A 2K6, Canada
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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