کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10264805 458028 2016 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The acoustic-parametric instability for hydrogen-air mixtures
ترجمه فارسی عنوان
بی ثباتی پارامتری صوتی برای مخلوط هیدروژن و هوا
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی
Acoustic-parametric instabilities are a significant acceleration and self turbulization mechanism which may increase noticeably the propagation velocity of flames. Therefore, the acoustic-parametric instabilities for H2-air mixtures at normal conditions have been investigated. The simplified analytical model proposed by Bychkov as well as the numerical solutions of the Searby and Rochwerger formulation were taken into account. The growth rate of the instabilities and the influence of different fuel concentrations and sound frequencies on the existence of spontaneous transition from the acoustic to the parametric instability were analyzed. The existence of a wavenumber range in which flames will be unstable for all intensities of sonic perturbations with adequate frequencies was postulated as a consequence of analytic investigation. This constitutes a significant flame acceleration mechanism with major impact on stability and flame development phenomena.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Combustion and Flame - Volume 160, Issue 10, October 2013, Pages 2009-2016
نویسندگان
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