Abstract：Flow distribution and phase split in micro-junctions are important for normal operations of micro-engineering devices. This work uses computational fluid dynamics method to study the phase distribution characteristics in a micro-junction. Numerical simulations of a micro-junction with different branch pipe dip angles were performed, and the phase split characteristics in the micro-junction was investigated. The flow distribution and phase volume fraction distribution were analyzed for annular inlet flows. The results show that, when the branch pipe dip angle is 90°, 120° and 150°, the liquid prefers to enter the side branch; when the branch pipe dip angle is 30°, the gas prefers to enter the side branch; when the branch pipe dip angle is 60°, the gas and liquid splits almost equally. Therefore, the structural improvement of the branch pipe can help to reduce the non-uniform phase distribution in the micro-junction.
Zhou Yunlong,Yang Mei,Mi Liedong. Numerical Simulation of Phase Split of Annular Flow in a Micro-Junction-Effect of Branch Dip Angle[J]. 化学反应工程与工艺, 2013, 29(1): 35-41.
