کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8144784 | 1524065 | 2018 | 15 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Density ratio effect on particle sedimentation in a vertical channel
ترجمه فارسی عنوان
اثر نسبت تراکم روی رسوب گذاری ذرات در یک کانال عمودی
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک اتمی و مولکولی و اپتیک
چکیده انگلیسی
A circular particle settling in a confined vertical channel with static fluid is investigated by lattice Boltzmann method, the effect of density ratio on the particle motion and flow pattern is discussed. It shows that the particle starting from an initial position off-center displays various moving modes accompanied by different flow patterns for 1.003â¯â¤â¯Î³â¯â¤â¯5.0: when γâ¯<â¯1.1, the particle is finally in a stable equilibrium near the centerline and settles uniformly with a symmetrical flow, but there are different modes before reaching the centerline at different density ratios, a monotonic approach appears at γâ¯â¤â¯1.005 and an transient overshoot appears at 1.005â¯<â¯Î³â¯<â¯1.1; When γâ¯=â¯1.1, a weak oscillation appears in the particle moving but the flow is almost symmetrical, it is in a critical state of the particle moving from stable equilibrium with a transient overshoot to oscillation; When 1.1â¯<â¯Î³â¯â¤â¯3.0, the particle oscillates regularly around the centerline with the uniform amplitude and frequency, and it turns into irregularity for γâ¯>â¯3.0. Meanwhile the rotation of the particle depends on the distance from a wall; it rolls up the closer wall and stops at centerline.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chinese Journal of Physics - Volume 56, Issue 4, August 2018, Pages 1427-1438
Journal: Chinese Journal of Physics - Volume 56, Issue 4, August 2018, Pages 1427-1438
نویسندگان
Rao Yong, Liu Chaofeng, Wang Huatao, Ni Yushan, Lv Chao, Liu Shuang, Lan Yamei, Wang Shiming,