کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
241193 1427923 2013 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Flame acceleration in long narrow open channels
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Flame acceleration in long narrow open channels
چکیده انگلیسی

We study the propagation of premixed flames in long but finite channels, when the mixture is ignited at one end and both ends remain open and exposed to atmospheric pressure. Thermal expansion produces a continuous flow of burned gas directed away from the flame and towards the end of the channel where ignition took place. Owing to viscous drag, the flow is retarded at the walls and accelerated in the center, producing a pressure gradient that pushes the unburned gas ahead of the flame towards the other end of the channel. As a result the flame accelerates when it travels from end to end of the channel. The total travel time depends on the length of the channel and is proportional to γ−1ln(1 + γ), where γ is the heat release parameter.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Proceedings of the Combustion Institute - Volume 34, Issue 1, 2013, Pages 865–872
نویسندگان
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