Experimental and numerical investigation of particle distribution behaviors in a rolling circulating fluidized bed
Experimental and numerical investigation of particle distribution behaviors in a rolling circulating fluidized bed
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滚动循环流化床颗粒分布行为的实验和数值研究
DOI：
10.1016/j.powtec.2014.03.023
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发表时间：
2014-05
影响因子：
5.2
通讯作者：
Takei, Masahiro
中科院分区：
文献类型：
--
作者：
Liu, Kai;Murata, Hiroyuki;Harumi, Kazuyoshi;Takei, Masahiro
通过电容层析成像（ECT）实验和CFD-DEM数值模拟，研究了摇摆条件下循环流化床内颗粒分布的动态特性。在本研究中，滚动运动的幅度和周期分别保持在Θ= ± π/12 rad（± 15°）和T = 5 s。石灰石颗粒（Geldart组B）用作循环颗粒。结果表明，由于惯性力和重力分量的变化可以忽略不计，摇摆运动对颗粒体积分数的流向分布影响很小。然而，实验和模拟结果都表明，滚动运动对颗粒在径向上的分布不均匀性具有主导影响。由于重力分量和径向惯性力的合力的显著影响，摇摆运动下颗粒体积分数出现了明显的周期性变化，而在以往的研究中，直立运动下颗粒体积分数没有出现这种现象。
Dynamic properties of particle distribution behaviors in the circulating fluidized bed with rolling motion have been clarified by both Electrical Capacitance Tomography (ECT) experiment and CFD-DEM simulation. In the present study, the amplitude and period of the rolling motion were maintained atΘ= ± π/12 rad (± 15°) andT= 5 s, respectively. Limestone particles (Geldart group B) were used as the circulating particles. As a result, the rolling motion causes little impact to the flow directional profiles of particle volume fraction due to the negligible inertial forces and changes of gravity component. However, both the experimental and simulation results indicate that the rolling motion has a dominant influence on the particle distribution un-uniformity in the radial direction. An obvious periodical variation of the particle volume fraction appears under the rolling motion due to the significant effect of the resultant force of the gravity component and inertial forces in radial direction, whereas this phenomenon did not appear under the upright condition in any previous studies.
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影响因子：
3.5
作者：
M. Horio
通讯作者：
M. Horio
DOI：
10.1061/(asce)0733-9399(1998)124:3(285
发表时间：
1998-03-01
期刊：
JOURNAL OF ENGINEERING MECHANICS-ASCE
影响因子：
--
作者：
Iwashita, K;Oda, M
通讯作者：
Oda, M
影响因子：
5.2
作者：
R. Dry;I. Christensen;C. White
通讯作者：
R. Dry;I. Christensen;C. White
鼓泡流化床中固体二元混合物的尺寸分离
影响因子：
5.2
作者：
Lu, HL;He, YR;Qin, YK
通讯作者：
Qin, YK
影响因子：
5.2
作者：
T. Zhao;M. Takei
通讯作者：
T. Zhao;M. Takei