Investigation of flow development of co-current gas–liquid vertical slug flow

Wisp-like structures in vertical gas–liquid pipe flow revealed by wire mesh sensor studies

“…It is noted that Legius et al took their data further from the inlet mixer than the other three. Available information shows that the frequency decreases with distance from the mixer as shown by, e.g., Kaji et al (2009c). This might explain the differences.…”

A new database on the evolution of air–water flows along a large vertical pipe

“…Such data are used e.g. by Kaji et al [4] to obtain characteristic parameters of the flow like slug frequencies. Most data however are obtained by time averaging, which e.g.…”

Experimental investigation of the effect of liquid viscosity on slug flow in small diameter bubble column

“…Falling Liquid Film: These are thin film of liquid surrounding the Taylor bubble. The liquid film usually flows into subsequent liquid slug causing bubble entrainment in the liquid slug and also flow separation at the bubble tail [17]. The flow of the liquid into the liquid slug is due to the force of gravity.…”

“…It is the region where gas is being entrained from and returned to the Taylor bubble and is of 0.15 -5 pipe diameter. Directly below this region, is the wake zone of about 1 -10 pipe diameter long [17]. It is a cluster of bubbles which is said to contain the vortex according to [35].…”