Flow regime mapping in gas-liquid flow in micro-channels

Abstract

Experiments were conducted in a micro-channel with square cross-section with each side being 3 mm. Gas-liquid flow is employed for determining the flow patterns with water being liquid phase and nitrogen being gas phase. Over a wide range of gas and liquid velocities the flow patterns were studied using visual inspection technique. It is found that four types of flow regimes occurred within the range of variables considered in the present study. These are bubble flow, slug flow, channel flow and transient flow. A flow regime map is also constructed. Index Terms-Two-phase flow, micro-channel, flow regime, flow pattern. Manuscript received.