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Портал Begell Электронная Бибилиотека e-Книги Журналы Справочники и Сборники статей Коллекции
Heat Transfer Research
Импакт фактор: 0.404 5-летний Импакт фактор: 0.8 SJR: 0.264 SNIP: 0.504 CiteScore™: 0.88

ISSN Печать: 1064-2285
ISSN Онлайн: 2162-6561

Выпуски:
Том 51, 2020 Том 50, 2019 Том 49, 2018 Том 48, 2017 Том 47, 2016 Том 46, 2015 Том 45, 2014 Том 44, 2013 Том 43, 2012 Том 42, 2011 Том 41, 2010 Том 40, 2009 Том 39, 2008 Том 38, 2007 Том 37, 2006 Том 36, 2005 Том 35, 2004 Том 34, 2003 Том 33, 2002 Том 32, 2001 Том 31, 2000 Том 30, 1999 Том 29, 1998 Том 28, 1997

Heat Transfer Research

DOI: 10.1615/HeatTransRes.v38.i2.70
pages 171-184

Analytical Method for Calculating Time Characteristics of Ignition of Hybrid Gas Suspensions by a Hot Body

B. S. Seplyarskii
Institute of Structural Macrokinetics and Problems of Material Science, Russian Academy of Sciences, Chernogolovka, Moscow Region, Russian Federation
S. V. Kostin
Institute of Structural Macrokinetics and Problems of Material Science, Russian Academy of Sciences, Chernogolovka, Moscow Region, Russian Federation
T. P. Ivleva
Institute of Structural Macrokinetics and Problems of Material Science, Russian Academy of Sciences, Chernogolovka, Moscow Region, Russian Federation

Краткое описание

Approximated analytical and numerical methods were used to investigate regularities of ignition of hybrid gas suspensions by a hot body. It was shown that ignition can occur in three different modes: kinetic, diffusion, and transition. A parametrical region for implementation of each of the possible ignition modes was determined. It was found that transition from the kinetic to diffusion mode occurs with changes in the heater temperature by only one characteristic interval and can be accompanied by a jumpwise decrease of both the ignition delay time and the amount of energy required for initiation of the ignition process. For the kinetic mode, the wave theory of ignition was used to obtain, for the first time, analytical expressions for computation of time characteristics of ignition. It was shown that the impact of addition of combustible gas on the ignition regularities was high for both large and very small values of the parameter Z, the analogue of the Semenov criterion. For the first time, an approximate formula was proposed to calculate time characteristics of ignition over the entire range of variation of the parameter Z. Numerical calculations showed that the error of determination of time characteristics of ignition using the approximate formula did not exceed 45%.


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