回转容器内模拟散体流动

散体在回转容器内的流动普遍见于各种工业过程之中,本文模拟回转容器内散体的流动以探寻该过程的内在规律,分析散体流变的特性,建立回转圆筒内的数学模型,用CFX在转筒转速分别为2 r/min,3 r/min,4 r/min,5 r/min,10 r/min,25 r/min,50 r/min和100 r/min的条件下,模拟回转圆筒内散体的流动。模拟结果,当转筒转速<25 r/min时,散体呈滚动状态,当转筒转速升到25 r/min时,呈小瀑布流状态,当转筒转速升到50 r/min时,达到大瀑布流状态,当转筒转速继续升到100 r/min时,转简内散体呈典型的环流状态,该结果与文献结果相同,此外,模拟结果还显示,回转圆筒内散体在滚动流动状态下,流动区的厚度还会随转筒转速的增加而增大。模拟结果表明模型反映散体流动的状况比较客观,因而可为模拟回转圆筒内散体的流动相关的过程提供指导。

Modeling of particles moving in rotary drum

Particles moving in rotary drum is phenomena widely exist in industry process.A math model was established through rheology analysis and was used to calculate velocity distribution of particles in rotary drum at various rotary speeds.Paticles flowing in rotary drum which revolved at various speeds include 2 r/min,3 r/min,4 r/min,5 r/min,10 r/min,25 r/min,50 r/min and 100 r/min were modeled.When the speed of drum was less than 25 r/min,particles in the drum was flowing at rolling state,when the speed reached...