[1]吴浩,张裕中..针盘式粉碎机内气固两相流场数值研究[J].郑州大学学报(工学版),2008,29(02):59-64.[doi:10.3969/j.issn.1671-6833.2008.02.015]
 Wu Hao,Zhang Yuzhong.Numerical study of gas-solid two-phase flow field in needle-disc pulverizer[J].Journal of Zhengzhou University (Engineering Science),2008,29(02):59-64.[doi:10.3969/j.issn.1671-6833.2008.02.015]
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针盘式粉碎机内气固两相流场数值研究()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
29
期数:
2008年02期
页码:
59-64
栏目:
出版日期:
1900-01-01

文章信息/Info

Title:
Numerical study of gas-solid two-phase flow field in needle-disc pulverizer
作者:
吴浩张裕中.
江南大学,食品装备技术研究中心,江苏,无锡,214122, 江南大学,食品装备技术研究中心,江苏,无锡,214122
Author(s):
Wu Hao; Zhang Yuzhong
关键词:
针盘式粉碎机 颗粒轨道模型 气固两相流 数值模拟
Keywords:
DOI:
10.3969/j.issn.1671-6833.2008.02.015
文献标志码:
A
摘要:
为了准确了解针盘式粉碎机的粉碎过程,气相采用重整化群(Renormalization Group,RNG)k-ε双方程模型,颗粒相采用随机颗粒轨道模型.对针盘式粉碎机进行气固两相流的数值研究,并综合考虑颗粒受力、湍流扩散以及颗粒粒径分布三方面影响因素来对颗粒轨道模型进行精确的定义.模拟结果表明,在转子销棒的高速撞击下,定子区附近会形成回流,有利于颗粒的再粉碎;小的定、转子周向间隙和径向间隙也有利于颗粒的多次粉碎;转子叶片与径向夹角减小,有利于出料.本研究有助于针盘式粉碎机性能的分析及结构与工艺参数的优化.
Abstract:
In order to accurately understand the crushing process of the needle-disc mill, the gas phase (RNG) k-ε two-way path model is used, and the particle phase is based on random particle orbital model. The numerical study of gas-solid two-phase flow of needle disc mill was carried out, and the particle orbit model was accurately defined by considering the three influencing factors of particle force, turbulent diffusion and particle size distribution. The simulation results show that under the high-speed impact of the rotor pin rod, a reflux will be formed near the stator area, which is conducive to the re-crushing of particles. The small stator and rotor circumferential clearance and radial clearance are also conducive to the multiple crushing of particles; The angle between the rotor blade and the radial direction is reduced, which is conducive to discharging. This study is helpful for the analysis of the performance of the needle disc mill and the optimization of structure and process parameters.

更新日期/Last Update: 1900-01-01