کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9636533 | 465874 | 2005 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Solids circulation and axial dispersion of cohesionless particles in a V-mixer
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Solids circulation and axial dispersion of cohesionless particles in a V-mixer Solids circulation and axial dispersion of cohesionless particles in a V-mixer](/preview/png/9636533.png)
چکیده انگلیسی
The motion of mono-sized 3 mm glass beads in a V-mixer was studied using the Positron Emission Particle Tracking (PEPT) technique. A similarity is found between the motion in V-mixers and in rotating drums. In both cases, there is a surface flow regime and a solid body motion regime. Within each arm of the mixer, there is a regular circulation in rotating Lagrangian coordinates, the direction of which changes as the volumetric fill increases. The flow reversal occurs at intermediate fills and is system dependent. It was attributed to the surface flow regime and the freeboard in the arm of the V-mixer. The circulation intensity in the arm was quantified and was found to increase quadratically with increasing rotational speed. It was attributed to the kinetic energies of particles within each arm. The circulation intensity decreases when the fill level increases from 10% fill to 46% fill and a minimum value exists at intermediate fills. The axial dispersion coefficient of the particles in the V-mixer increases linearly as the rotational speed increases from 15 rpm to 60 rpm.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Powder Technology - Volume 152, Issues 1â3, 29 April 2005, Pages 133-140
Journal: Powder Technology - Volume 152, Issues 1â3, 29 April 2005, Pages 133-140
نویسندگان
H.P. Kuo, P.C. Knight, D.J. Parker, J.P.K. Seville,