摘要
采用Fluent中"流体体积"模型对二维T型微通道内液滴的生成进行了数值模拟,考察了连续相毛细数、流量比、黏性比对液滴尺寸和液滴间距的影响,与实验结果进行了对比,吻合较好。计算结果表明,液滴长度随毛细数增大而减小且存在幂率关系,随流量比的增大而线性增大,随黏性比增大而略微增大且无明显函数关系;此外,液滴间距随毛细数增大而线性增大,随流量比增大而减小且存在幂率关系,随黏性比增大而略微增大且无明显函数关系。
VOF model in Fluent software was adopted to conduct numerical simulation of droplet formation in Two-dimensional T-junction microchannel. The effect of capillary number, flow-rate ratio, and viscosity ratio on the droplet length and space was investigated. The simulation results were in good agreement with the experimental results. The calculation results showed that, with the increase of the continuous phase capillary number, the droplet length de- creased and there was a power-law relationship. With the increase of the flow ratio, the droplet length increased linear- ly. With the increase of viscosity, there was a slight increase in droplet length and no obvious function relationship. Moreover, with the increase of the continuous phase capillary number, the droplet space increased linearly. With the increase of the flow ratio, the droplet spaee decreased and there was a power-law relationship. With the increase of viscosity ratio, there was a slight increase in droplet space and no obvious function relationship.
作者
韩雪兵
杨帆
郭雪岩
HAN Xue-bing;YANG Fan;GUO Xue-yan(School of Energy and Power Engineering, University of Shanghai for Science and Teehnology, Shanghai 200093, China;Shanghai Key Laboratory of Muhiphase Flow and Heat Transfer in Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China)
出处
《能源工程》
2018年第1期14-19,24,共7页
Energy Engineering
基金
上海市科学技术委员会科研计划资助项目(13DZ2260900)
关键词
T型微通道
VOF模型
毛细数
数值模拟
T-junction microchannel
VOF model
capillary number
numerical simulation
