کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
236494 465672 2014 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Combined effects of internal friction and bed height on the Brazil-nut problem in a shaker
ترجمه فارسی عنوان
اثر ترکیبی اصطکاک داخلی و ارتفاع بستر بر روی مشکل برزیل در یک شاکر
کلمات کلیدی
طول نفوذ، اصطکاک کشیدن نیرو، مواد گرانول مشکل برزیل-مهره، بستر ارتعاش
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی


• The rise time is enhanced when the intruder’s friction coefficient increases.
• Penetration length decreases with the increasing friction coefficient of intruder.
• The friction drag force is reduced with the decreasing bed height.
• Friction effect was not significant with the lower bed-filling heights.

We experimentally studied the influence of an intruder's friction coefficient and bed-filling height on the Brazil-nut effect in a quasi-2D vertical vibration granular bed. The motion of intruder was successfully measured using a high-speed camera and the rising time of intruder was determined by using a particle tracking method with the help of image processing technology. The results show that an intruder's friction coefficient and filling bed height play significant roles in the rise dynamics. The results also show that the rise time increases when the intruder's friction coefficient increases, which is reduced when the filling bed height decreases. Penetration length and friction drag force were also determined in this study. The penetration length was reduced and the friction drag force was enhanced with the increase of an intruder's friction coefficient and bed height. Additionally, the variation between the rise times of the smooth and rough intruders was not significant with the lower bed-filling heights.

We experimentally studied the influence of an intruder's friction coefficient and bed-filling height on the Brazil-nut effect in a quasi-2D vertical vibration granular bed. The results demonstrate that the “Brazil-nut effect” could be mitigated because of the larger intruder-friction coefficient and the higher filling bed height. The results show that the rising time was enhanced with the increase of the intruder-friction coefficient and that it decreases with the reduction of filling bed height.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Powder Technology - Volume 253, February 2014, Pages 561–567
نویسندگان
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