1989 Volume 3 Issue 2 Pages 145-154
When gas phase penetrates a liquid slug, velocity of the liquid slug deviates from that of Nicklin's correlation. Considering this phenomenon, a new concept of penetrant flow is introduced. Using penetrant flow as a flow pattern instead of churn flow, a flow, pattern map for gas-liquid two-phase flow was produced. Comparing published flow transition boundaries, slug to penetrant flow transition agreed with slug to churn flow transition. From the flow pattern maps for gas-liquid-solid three-phase flow, it was found that flow transition boundaries shifted with an increase in solid concentration.
