Characterizing the effect of substrate surface roughness on particle-wall interaction with the airflow method
Characterizing the effect of substrate surface roughness on particle-wall interaction with the airflow method
复制标题
用气流法表征基材表面粗糙度对颗粒壁相互作用的影响
DOI：
10.1016/j.powtec.2007.11.041
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发表时间：
2008-09
影响因子：
5.2
通讯作者：
Jiang, Yanbin
中科院分区：
文献类型：
--
作者：
Masuda, Hiroaki;Matsusaka, Shuji;Qian, Yu;Jiang, Yanbin
采用气流法研究了表面粗糙度对颗粒与壁面相互作用的影响。实验中使用了5种单分散球形颗粒（Dp 50 =11-41 μm）和6种不同表面粗糙度（Ra=0.01-1.64 μm）的试件。将颗粒分散在测试件上以形成单层，并夹带在矩形空气通道中。空气速度以恒定速率增加，并且用激光粉尘监测器检测夹带的颗粒。微观观察表明，颗粒夹带发生在离散和间歇的事件在实验期间，因此，一个统计参数，即颗粒夹带效率作为空气速度的函数，被定义为评估颗粒-壁面相互作用力分布。实验结果表明，在亚微米尺度内，颗粒卷吸风速随表面粗糙度的增大而减小，并达到一个下限，而在微米尺度下，颗粒卷吸风速有所增大。还发现，衬底表面粗糙度的影响取决于颗粒直径。
The effect of surface roughness on particle–wall interaction was studied by the airflow method. Five kinds of monodispersed spherical particles (Dp50=11-41 μm) and six test pieces with different surface roughness (Ra=0.01-1.64 μm) were used in the experiments. The particles were dispersed on the test pieces to form a monolayer, and entrained in a rectangular air channel. The air velocity increased at a constant rate, and the entrained particles were detected with a laser dust monitor. Microscopic observations showed that particle entrainment occurred in discrete and intermittent events during experiment, thus a statistical parameter, i.e. the particle entrainment efficiency as a function of the air velocity, was defined for evaluating the particle–wall interaction force distribution. The experimental results showed that the air velocity for particle entrainment decreases with the increase of the surface roughness within submicron-scale and reaches a lower limit, while increases to some extent for micron-scale surface roughness. It was also found that the effect of the substrate surface roughness depends on the particle diameter.
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影响因子：
3.2
作者：
Jun Wang;E. Levy
通讯作者：
Jun Wang;E. Levy
影响因子：
--
作者：
S. Matsusaka;Kouichi Mizumoto;Masanori Koumura;Hiroaki Masuda
通讯作者：
S. Matsusaka;Kouichi Mizumoto;Masanori Koumura;Hiroaki Masuda
影响因子：
4.5
作者：
BRAATEN, DA;PAW, KT;SHAW, RH
通讯作者：
SHAW, RH
影响因子：
3.9
作者：
Götzinger, M;Peukert, W
通讯作者：
Peukert, W
影响因子：
0.4
作者：
S. Matsusaka;Masanori Koumura;Hiroaki Masuda
通讯作者：
S. Matsusaka;Masanori Koumura;Hiroaki Masuda