Experimental study the effect of multi-density on density-induced granular segregation behavior in a rotating drum.

• Main Authors: Cheng-Che,Tsai, 蔡承哲
• Other Authors: Chun-Chung,Liao
• Format: Others
• Language: zh-TW
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/cw2bc6

碩士 === 國立高雄應用科技大學 === 模具工程系 === 106 === As the development of granular flow has become more and more active, it has gradually occupied a seat in the academic and industry sectors. These include blends made, powder metallurgy mixing speeds of conveyor belts, metal laminate manufacturing of powder coating technology etc. This dissertation is mainly experimental study the effect of multi-density on density-induced granular segregation behavior in a rotating drum, particle material can cause buoyancy force due to the difference in density. This dissertation changes the combination of different density particles and using the image analysis method and particle chase technology to successfully measure the segregation index of the granular material and particle speed, particle temperature, and repose of angle in a rotary drum system. The experimental results of this dissertation show that the segregation index of two different density particle materials will be greater than three different density particle materials and when adding more glass beads in a combination of two particulate materials, as a result, it was found that the segregation index increased and affect the change of the angle of repose. When the content of glass beads is added more, the angle of repose will also decrease. The results of the study have also been found under the composition of three different density particles, the average speed of the POM particles will cause the traced particles to be squeezed out of the core because the glass beads occupy the position of the segregation core. Causes both the average POM particle velocity and the particle temperature to increase as the content of added glass beads increases.