In order to investigate the flow field and particle dynamics within an unbaffled continuous stirred tank reactor(CSTR),computational fluid dynamics(CFD)was employed.This study conducted an analysis of three distinct agitation configurations based on the Euler-Lagrangian model.An examination of particle mixing behavior was conducted for particle sizes of 100,300,and 500 μm under various operating conditions.The research findings revealed that,within the time interval of 0-100 s,the average velocity of particles within the initial stirring tank increased by 39.22%compared to its initial value,reaching 1.479 7 m/s,while the average flow velocity was measured at 1.737 2 m/s,and the average particle velocity exhibited a similar trend to the flow field velocity.In addition,it was observed that the particle distribution was most uniform when the agitator was placed in the center of the tank,and the use of double-layer impellers significantly increased the particle velocity,reaching a maximum particle velocity of 4.238 3 m/s.
关键词
计算流体力学/连续搅拌釜/颗粒分布/流场/无挡板釜
Key words
computational fluid dynamics/continuous stirred tank reactor/particle distribution/flow field/unbaffled tank
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