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http://dx.doi.org/10.15231/jksc.2013.18.3.031

Numerical Investigation on the Self-Ignition of High-pressure Hydrogen in a Tube Influenced by Burst Diaphragm Shape  

Lee, Hyoung Jin ((주)LIG NEX1, PGM R&D Lab.)
Kim, Sung Don ((주)뉴로스)
Kim, Sei Hwan (서울대학교 기계항공공학부)
Jeung, In-Seuck (서울대학교 기계항공공학부)
Publication Information
Journal of the Korean Society of Combustion / v.18, no.3, 2013 , pp. 31-37 More about this Journal
Abstract
Numerical simulations are conducted to investigate the feature of spontaneous ignition of hydrogen within a certain length of downstream tube released by the failure of pressure boundaries of various geometric assumption. The results show that the ignition feature can be varied with the shape of pressure boundary. The ignition at the contact region are developed at the spherical pressure boundaries due to multi-dimensional shock interactions, whereas the local ignition is developed in limited area such as boundary layer at the planar pressure boundary conditions. The spontaneous ignition inside the tube can be generated from the reaction region of only boundary layer regardless of existence of the reaction of core region.
Keywords
High pressure hydrogen gas; Pressure boundary; Spontaneous ignition;
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