Interfacial structures in upward huge wave flow and annular flow regimes

On the role of droplets in cocurrent annular and churn-annular pipe flow

“…Occasionally, large interfacial waves (highly aerated) are propelled fast with the gas flow; possibly these waves correspond to the huge waves reported by Sekoguchi and Takeishi (1989). Here, the onset of liquid down-flow is referred to as the flow-reversal point, and, in general, occurs at a gas velocity below the minimum in the pressure-gradient curve.…”

Disturbance wave development in two-phase gas–liquid upwards vertical annular flow

“…The study of disturbance waves has been an on-going topic in two-phase flow and amongst recent publications one may cite the work of Sekoguchi et al (1985), Sekoguchi and Takeishi (1989), Wang et al (2004), Schubring et al (2010aSchubring et al ( , 2010bSchubring et al ( , 2010c and Okawa et al (2010). A review on the topic of disturbance waves in annular flow is given by Azzopardi (1986).…”

Icone15-10736 Experimental Study on Liquid Film Behavior in 3x3 Rod Bundle Channel Simulated Nuclear Fuel Assembly

“…They measured time-dependent spatial distribution of the liquid film thickness over a channel width (Kang and Kim,(1992). Sekoguchi and Takeishi (1989) demonstrated a number of cross-sectional views of the liquid film in vertically upward flow by use of a supermultiple-points resistivity probe. However, these intrusive methods might cause more or less perturbations to the flow.…”