CFD Simulation Study of Flow Field and Particle Distribution in an Unbaffled CSTR
LI Maomiao1, ZHAO Meng1, SHI Yuzhen2, DENG Jiarui3, LI Jun4
1. Faculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming 650500, China;
2. Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China;
3. The 14th Bureau of Water Resources and Hydropower, Kunming 650233, China;
4. Southwestern Institute of Physics, Chengdu 610200, China
Abstract： 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 7m/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.
LI Maomiao,ZHAO Meng,SHI Yuzhen et al. CFD Simulation Study of Flow Field and Particle Distribution in an Unbaffled CSTR[J]. Chemical Reaction Engineering and Technology, 2024, 40(1): 58-65.
