Horizontal oil-water flow in small diameter tubes. Flow patterns

摘要

Experimental results of flow patterns for oil-water horizontal flow in small diameter tubes (3 mm internal diameter) are reported. In particular, regime photographs and flow pattern transition maps are presented. It is worth mentioning that oil was observed to flow in the core of the pipe and water flowed around the perimeter. In addition to experimental results, theoretically based transition criteria for the flow patterns are discussed.