Proposed method for calculating void fraction and flow pattern of unsteady-state homogenous approach of two-phase flow in vertical oil extraction pipe

الملخص EN

The improvement of oil extraction needs to know what factors that effect on the behavior of oil.

This paper studies the unsteady-state homogeneous approach of two-phase flow in vertical oil extraction pipe.

The model used to predict the flow pattern is determined theoretically, while that used for void fraction is taken from empirical relation.

The set of equations adapted in FORTRAN-90 program to calculate the output values.

The comparison with experimental results gave good closing, where the absolute percentage difference in void fraction value is about (22 %) for (α < 0.5) and (10 %) for (α > 0.5).

In other hand, the absolute percentage difference in gas superficial velocity is about (18 %).

It is also observed that slug period numerically long than that in experimental.