| 低雷诺数下管状非球形颗粒群的阻力系数 |
| |
| 引用本文： | 郑海涛,陈晓辉,张礼鸣,谢洪勇.低雷诺数下管状非球形颗粒群的阻力系数[J].中国粉体技术,2004,10(3):6-8. |
| |
| 作者姓名： | 郑海涛 陈晓辉 张礼鸣 谢洪勇 |
| |
| 作者单位： | 1. 中国航天科工集团第六研究院
2. 大连理工大学,化工学院,辽宁,大连,116012 |
| |
| 摘 要： | 以红豆、黑米、铺路石、垫片、大瓷管、中瓷管作为非球形颗粒物料,以硅油作为流态化介质,通过测量液固散式流化床的流速与空隙率的关系,测量了非球形颗粒群在层流区的阻力系数。根据阻力系数和散式流态化Richarson和Zaki指数的实验结果,经研究和分析,提出了低雷诺数时非球形颗粒群阻力系数的计算公式为CD=24(εnψ0.83Re)-1。
|
| 关 键 词： | 颗粒群 流态化 阻力系数 |
| 文章编号： | 1008-5548(2004)03-0006-03 |
| 修稿时间： | 2003年7月30日 |
Drag Coefficient of Non-spherical Fluidized Particles at Low Reynolds Numbers |
| |
| ZHENG Hai tao,CHEN Xiao hui,ZHANG Li ming,XIE Hong yong.Drag Coefficient of Non-spherical Fluidized Particles at Low Reynolds Numbers[J].China Powder Science and Technology,2004,10(3):6-8. |
| |
| Authors: | ZHENG Hai tao CHEN Xiao hui ZHANG Li ming XIE Hong yong |
| |
| Abstract: | Drag coefficients of various kinds of non spherical particles including red bean,black rice,broken stone,spacer and tube type of particles are investigated by the measurement of bed expansion of particulate fluidized beds at low Reynolds numbers. The measurement results show that the Richardson and Zaki exponents of tube type of particles are much higher than those of other kinds of non spherical particles. But, the drag coefficient can be expressed asCD=24(εnψ0.83Re)-1.for all the non spherical particles investigated. |
| |
| Keywords: | fluidized particles fluidization drag coefficient |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
