IJE TRANSACTIONS C: Aspects Vol. 27, No. 6 (June 2014) 829-838   

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M. R. Yousefi and M. Shirvani
( Received: September 10, 2013 – Accepted: December 12, 2013 )

Abstract    The experimental investigation of material flow in rotary drums is studied. An equipment in the size of pilot-scale was used to collect experimental data for investigation of validity of the conventional steady-state model of material flow in rotary drums. Also, the transient data of the time required for material movement in the empty drum up to any specified cross section are also reported. The novelty of the work is that fine particles, in place of granular materials, were used in all of the experiments. The investigations reveals of the weak validity of the model for describing the bed depth of material at feeding zone as well as discharge zone. But, it is acceptable at mid zone.


Keywords    Rotary Drum, Material Flow, Steady-State Model, Model Error


چکیده    چکیده بررسی آزمایشی جریان مواد در استوانه های دوار مطالعه شده است. یک دستگاه آزمایشگاهی در مقیاس پایلوت برای جمع آوری داده های آزمایشی جهت بررسی اعتبار مدل پایای جریان مواد در استوانه های دوار بکار برده شده است. همچنین داده های گذرا برای مدت زمان عبور مواد تا هر فاصله دلخواهی از استوانه در یک استوانه دواری که در ابتدا خالی میباشد ارائه شده است. ویژگی مقاله در مقایسه با کارهای دیگران استفاده از ذرات ریز میبا شد. بررسیهای انجام شده گویای اعتبار ضعیف مدل موجود برای بیان عمق بستر مواد در ناحیه خوراک و همچنین در ناحیه تخلیه می باشد. اما، برای ناحیه میانی استوانه نتایج قابل قبول است.



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