个人信息Personal Information
教授
博士生导师
硕士生导师
性别:女
毕业院校:大连理工大学
学位:硕士
所在单位:能源与动力学院
办公地点:能源与动力学院718室
联系方式:13084159090
电子邮箱:lisuf@dlut.edu.cn
An Experimental Investigation on the Influence of Temperature on the Normal Impact of Fine Particles with a Plane Surface
点击次数:
论文类型:期刊论文
发表时间:2014-04-01
发表刊物:ENERGIES
收录刊物:SCIE、EI、Scopus
卷号:7
期号:4
页面范围:2079-2094
ISSN号:1996-1073
关键字:temperature; rebound characteristics; impaction experiments; normal restitution coefficient
摘要:This study investigated the rebound behavior of SiO2 particles normally impacting a planar surface under different temperature conditions. The system has been characterized for an aerosol inlet temperature range of 20-190 degrees C, flow velocities of 0-20 ms(-1), and an impaction surface temperature range of 20-140 degrees C. For the first time, while keeping the same temperature gradient from the high-to low-temperature regions, the influences of varying temperature on the rebound behavior of SiO2 particles normally impacting a plane surface were examined. At increased temperatures, the plastic deformation increases and the coefficient of restitution reduces. The critical velocity is between 0.542 and 0.546 m/s under condition 1 (the carrier gas temperature (T-g) and the impaction surface temperature (T-W) remain at room temperature of 20 degrees C), which increases to between 0.829 and 0.847 m/s under condition 4 (T-g and T-W remain at temperatures of 190 degrees C and 140 degrees C, respectively). The experimental results show that the critical velocity increases with increasing temperature.