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A definition of gas-liquid plug flow in horizontal pipes

1990; Elsevier BV; Volume: 16; Issue: 2 Linguagem: Inglês

10.1016/0301-9322(90)90056-o

1879-3533

Zvi Ruder, Thomas J. Hanratty,

Drilling and Well Engineering

Experiments were performed to define the transition from slug flow to plug flow in a horizontal pipe. In slug flow the front of the gas cavity is a "Benjamin bubble" and the back is a hydraulic jump. At a Froude number [(C−uL1)(gD)]0.5≲2, a transition is defined whereby the liquid increases in height in stages in the back of the cavity. For low gas throughputs, it is shown that the front of the cavity can still be represented by the Benjamin bubble.