Frictional pressure gradients in two-phase flow in a small horizontal rectangular channel

Pressure drops of single and two-phase flows through T-type microchannel mixers

“…Another deviation is seen from these figures that Lockhart and Martinelli correlation fails to describe the dependence of C value on X and j L , i.e., the present N 2 -water two-phase flow in microchannels exhibits significant mass flux effect, as already proved by other authors for air-water two-phase flow in mini rectangular channels [36,45] and for two-phase flow of refrigerants in a mini tube [46]. Thus a modification of C value in Eq.…”

Hydrodynamics and mass transfer characteristics in gas–liquid flow through a rectangular microchannel

“…(7) with a single value of C. Moreover, the experimentally derived C value increases dramatically when there is an increase in the range of mass flux G, showing significant mass flux effect. This effect was first observed in minichannels with d h 1 mm (Ali et al, 1993;Wambsganss et al,1992;Wang et al, 1997). Then the prevalence of such effect in microchannels was found to be also evident.…”

One-dimensional interfacial area transport of vertical upward bubbly flow in narrow rectangular channel

“…Most of the researchers studied the flow regime, frictional pressure loss, void fraction and gas velocity in narrow rectangular channels in the past few decades. Lowry and Kawaji (1988) and Wambsganss et al (1992) and others observed the flow regimes of concurrent upward two-phase flow in a narrow channel with the gap size between 0.3 and 3.18 mm. Even though considerable differences exist in the various researchers' definitions of two-phase flow regimes, the flow regimes can be generally classified into bubbly flow, slug flow, churn flow and annular flow.…”