期刊
ADVANCED POWDER TECHNOLOGY
卷 19, 期 4, 页码 349-367出版社
ELSEVIER
DOI: 10.1163/156855208X314949
关键词
liquid bridge; dynamic force; three spheres; capillary force; agglomerate
The minimum structure of a stable agglomerate in a fluidized beds is composed of not two particles, but more than three particles. The strength of a liquid bridge adhered to three spheres, which has been scarcely evaluated except for a pair of spheres, was estimated both by numerical simulation for a static bridge and by experimental data for a dynamic bridge within the volume range of a pendular bridge. A bridge force must be defined not at the normal neck bridge in a pair of spheres, but only at the contact line with a sphere. Numerical results estimated the maximum dimensionless static force that acted on spheres at the considerably smaller value, 1.1, than the experimental identical dynamic force. Dynamic force profiles were approximated by a power estimator with -1.2 exponent, and depend on bridge volume and Ohnesorge number composed of a stretching speed and liquid viscosity. The dimensionless displacement of a moving sphere up to 0.04 described the characteristic range of increased static and dynamic bridge forces. (C) Koninklijke Brill NV, Leiden and Society of Powder Technology, Japan, 2008.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据