摘要
为了研究内置格栅旋流分离器的分离机理,采用粒子动态分析仪测定了旋流分离器内部的三维两相流场.实验表明,主体流动为三维螺旋的向下运动,中央存在一个和底流口贯通的螺旋形空气柱;固体颗粒浓度在格栅内壁附近出现的最大值在格栅内部,随着格栅半径的减小,固体颗粒的浓度减小,在靠近空气柱附近出现最小值;底流中固体颗粒的粒径明显大于进水和出水中固体颗粒粒径.
In order to study the mechanism of separation of the hydrocyclone with separation screen, particle dynamics analyzer was used to measure the three-dimensional two-phase flow field in the hydrocyclone. The measured results show that the main flow in the hydrocyclone is a three-dimensional helical downward movement with an air core directly connected with the underflow pipe. The maximum concentration of the particle occurs near the inner wall of the screen and decreases with the radius. It reaches a minimum near the air core. The size of the particle in the underflow is much larger than that in the inflow and overflow.
出处
《北京理工大学学报》
EI
CAS
CSCD
北大核心
2004年第9期833-836,共4页
Transactions of Beijing Institute of Technology
基金
国家重大科技攻关项目(K99-05-35-02)
关键词
旋流分离器
暴雨径流
富营养化
粒子动态分析仪
hydrocyclone
stormwater runoff
eutrophication
particle dynamics analyzer
