Characteristics Research of Gas-liquid Two Phase Flow Based on the VOF Model in T Tube

摘要

Using numerical simulation method, under the adiabatic condition, this paper simulates the of the upstream gas liquid two phase flow in main tube of hydraulic diameter 1 mm T tube. Superficial gas velocity within 0.01~30m/s and fluid velocity within 0.01~5m/s, under simulated by two kinds of gas volume fraction, air-water flow diagram and the flow pattern transition boundary have been got from the simulation. By comparing the simulation results, it shows that under the same environment, small channel volume fraction of gas has important influence on convection type transition boundaries.