کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10280898 465844 2005 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Pulsed fluidization-a DEM study of a fascinating phenomenon
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Pulsed fluidization-a DEM study of a fascinating phenomenon
چکیده انگلیسی
An investigation of pulsed fluidization by discrete element method simulation is presented. The particles used were 0.5 mm in diameter and 2650 kg/m3 in density. The pulsed gas flow consisted of a fluctuating component superimposed on a constant component. The effect of gas pulsation was assessed through examination of bed pressure drop and bubble patterns for a wide range of conditions. The influence on fluidized bed behaviour of frequency and amplitude of pulsation, superficial gas velocity of the base flow, and the nature (type) of pulsation was studied. Transition from chaos to ordered behaviour and formation of regular bubble patterns were reproduced. It was found that regular bubble patterns arise from periodical formation of horizontally aligned voids near the distributor plate.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Powder Technology - Volume 159, Issue 3, 23 November 2005, Pages 142-149
نویسندگان
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