کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6464546 1422874 2017 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Density-driven sinking dynamics of a granular ring in sheared granular flows
ترجمه فارسی عنوان
دینامیک غرق شده توسط تراکم یک حلقه گرانول در جریان گرانشی بریده شده است
کلمات کلیدی
جریان گرانشی بریده شده، نسبت تراکم، نرخ برش، کسر جامد، غرق پویا
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی


- Heavy granular ring sinks gradually and reaches the steady state with time.
- Final steady-state sinking depth increases with the wall velocity and solid fraction.
- Final steady-state sinking depth does not increase monotonically with density ratio.
- The sinking rate increases linearly with the final steady-state sinking depth.

This study reports experimental findings on the sinking dynamics of a heavy granular ring caused by the density-driven segregation effect in sheared granular flows. Specifically, this study systematically investigates the influences of the density ratio, shear rate, and solid fraction of the granular material on the sinking behavior of a heavy granular ring. The parameters of the dimensionless sinking depth and sinking rate, respectively, describe the change in the granular ring position and quantify the particle sinking speed. Experimental results show that both the dimensionless sinking depth and the sinking rate increase as the bottom wall velocity (shear rate) and solid fraction increase. The dimensionless sinking depth and the sinking rate also exhibit a linear relation. The dimensionless sinking depth does not increase monotonically as the density ratio increases. The sinking rate increases linearly with the final steady-state sinking depth for the same heavy granular ring structure, regardless of the wall velocity (shear rate), solid fraction, and density ratio.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Advanced Powder Technology - Volume 28, Issue 10, October 2017, Pages 2597-2604
نویسندگان
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