Abstract：The vapor-liquid churn flow in a vertical tube was numerically simulated by volume of fluid (VOF) method to investigate the influence of pressure on gas-liquid churn flow interfacial wave amplitude, stability of interface and period of interfacial wave under high pressure 5.07, 10.1 3 and 17.22 MPa. The model was verified well by the experimental data. The simulation results showed that the interface stability decreased significantly and the period of the interfacial wave was elongated and the gas-liquid churn flow interfacial wave amplitude increased, with the increase of pressure. In addition, the gas-liquid churn flow interfacial wave amplitude decreased with the decrease of liquid velocity or the increase of gas velocity, but such influence became small with the increase of pressure. The liquid upward transport mechanism was different under the different pressures. Based on the characters of two-phase flow, it was considered that the reasons of the phenomenon appeared were from the density difference of gas-liquid.
Huang Na 1,Zhou Yunlong 2,Gao Ju 3. Interfacial Behavior of Vapor-Liquid Churn Flow in the Vertical Tube under High Pressure[J]. 化学反应工程与工艺, 2015, 31(1): 55-62.
