抄録
Experimental studies were made on the multi-dimensional behavior of upward bublby flow through a vertical pipe with an axisymmetric sudden expansion. In this report, the variation of the phase distribution in the sudden expansion was conducted at the different axial positions using a point-electrode resistivity probe for low to high liquid velocities, 0.265-5.31m/s. The results of detailed void fraction measurements showed that how the two-phase flow develops along the direction of the downstream of the sudden expansion. Such lateral phase distributions would become benchmark for multi-dimensional two-phase flow analysis.
