کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
144409 438932 2012 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Investigating the hydrodynamics of gas–solid bubbling fluidization using recurrence plot
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Investigating the hydrodynamics of gas–solid bubbling fluidization using recurrence plot
چکیده انگلیسی

Hydrodynamics of gas–solid fluidized bed was investigated using time series of pressure fluctuations by evaluation of the corresponding recurrence plot (RP). Patterns within RP of the fluidized bed were classified into two groups of local white areas (LWA), showing macro structures, and local bold areas (LBA), showing meso and micro structures. These patterns showed that the fluidized bed system has three different hydrodynamic behaviors as superficial gas velocity increases; at low gas velocities, macro structures become more dominant, further increase in gas velocity empowers influence of finer structures on the hydrodynamic and finally the fluidization regime changes. Additionally, these results were confirmed by recurrence rate (RR) and average cycle frequency. Comparison of RP of the fluidized bed with Lorenz and complete stochastic systems showed that the fluidized bed is more complex than Lorenz system, however, it’s hydrodynamic has not stochastic nature.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Advanced Powder Technology - Volume 23, Issue 3, May 2012, Pages 380–386
نویسندگان
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