Effect of wall rougheners on cross-sectional flow characteristics for non-spherical particles in a horizontal rotating cylinder

查看全文 作　　者：Guang [1]Lu;James [1]R.Third;Christoph [1]R.Müller

机构地区：[1]ETH Zürich, Department of Mechanical and Process Engineering, Institute of Energy Technology, Laboratory of Energy Science and Engineering,8092 Zürich, Switzerland

出　　处：《Particuology》索引2014年第12卷第1期,共10页

基　　金：the Swiss National Science Foundation(Grant 200021 132657/1);the China Scholarship Council(Guang Lu) for partial financial support of this work 摘　　要：Discrete-element-method(DEM) simulations have been performed to investigate the cross-sectional flow of non-spherical particles in horizontal rotating cylinders with and without wall rougheners. The nonspherical particles were modeled using the three-dimensional super-quadric equation. The influence of wall rougheners on flow behavior of grains was studied for increasing particle blockiness. Moreover,for approximately cubic particles(squareness parameters [555]), the rotational speed, gravitational acceleration and particle size were altered to investigate the effect of wall rougheners under a range of operating conditions. For spherical and near-spherical particles(approximately up to the squareness parameters [344]), wall rougheners are necessary to prevent slippage of the bed against the cylinder wall. For highly cubic particle geometries(squareness parameters larger than [344]), wall rougheners resulted in a counter-intuitive decrease in the angle of repose of the bed. In addition, wall rougheners employed in this study were demonstrated to have a higher impact on bed dynamics at higher rotational speeds and lower gravitational accelerations. Nevertheless, using wall rougheners had a comparatively small influence on particle-flow characteristics for a bed composed of finer grains. 关键词：非球形颗粒流动特性旋转圆筒横截面重力加速度水旋转速度二次方程式

相关文献

参考文献（28）
引证文献（8）
耦合文献（56）

参考文献(28)

引证文献(8)

耦合文献(56)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

Effect of wall rougheners on cross-sectional flow characteristics for non-spherical particles in a horizontal rotating cylinder

参考文献(28)

引证文献(8)

耦合文献(56)

用户提示