摘要
本文采用数值模拟方法计算了煤粉颗粒所受的Magnus力,考察了颗粒的旋转速度、流动Re数对Magnus力的影响,并且给出了相应的关系公式.通过比较煤粉颗粒在运动过程中所受到的Magnus力与气动力的大小,得出:当煤粉颗粒的旋转速度为1800转/分时,其大小约为气动力的1%,因此在实际的煤粉颗粒受力分析中是完全可以忽略该力的。
Magnus lift on a coal particle has been investigated numerically. An empirical equation has been obtained to describe both effects of the rotational speed and Reynolds number on the lift force on a sphere. It can be found from the comparison between both of drag and Magnus forces, that,as to a coal particle with high rotation speed, such as 1800 r/min, the magnitude of Magnus lift is only 1% of drag force. Therefore, neglecting Magnus force in the calculation of coal particle is really reasonable.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2001年第5期625-628,共4页
Journal of Engineering Thermophysics
基金
国家重点基础研究专项经费资助项目(No.G19990222)