کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1273715 1497627 2009 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Hydrogen flames in tubes: Critical run-up distances
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Hydrogen flames in tubes: Critical run-up distances
چکیده انگلیسی

The hazard associated with flame acceleration to supersonic speeds in hydrogen mixtures is discussed. A set of approximate models for evaluation of the run-up distances to supersonic flames in relatively smooth tubes and tubes with obstacles is presented. The model for smooth tubes is based on general relationships between the flame area, turbulent burning velocity, and the flame speed combined with an approximate description for the boundary layer thickness ahead of an accelerated flame. The unknown constants of the model are evaluated using experimental data. This model is then supplemented with the model for the minimum run-up distance for FA in tubes with obstacles developed earlier. On the basis of these two models, solutions for the determination of the critical run-up distances for FA and deflagration to detonation transition in tubes and channels for various hydrogen mixtures, initial temperature and pressure, tube size and tube roughness are presented.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 34, Issue 14, July 2009, Pages 5832–5837
نویسندگان
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