کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9690521 1457242 2005 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Modeling nonlinear dynamics of circulating fluidized beds using neural networks
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Modeling nonlinear dynamics of circulating fluidized beds using neural networks
چکیده انگلیسی
In the present work, artificial neural networks (ANNs) were proposed to model nonlinear dynamic behaviors of local voidage fluctuations induced by highly turbulent interactions between the gas and solid phases in circulating fluidized beds. The fluctuations of local voidage were measured by using an optical transmittance probe at various axial and radial positions in a circulating fluidized bed with a riser of 0.10 m in inner diameter and 10 m in height. The ANNs trained with experimental time series were applied to make short-term and long-term predictions of dynamic characteristics in the circulating fluidized bed. An early stop approach was adopted to enhance the long-term prediction capability of ANNs. The performance of the trained ANN was evaluated in terms of time-averaged characteristics, power spectra, cycle number and short-term predictability analysis of time series measured and predicted by the model.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: China Particuology - Volume 3, Issues 1–2, April 2005, Pages 84-89
نویسندگان
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