An experimental investigation of two-phase air–water flow through a horizontal circular micro-channel

Characteristics of slug flow with inertial effects in a rectangular microchannel

“…Also gas hold-up is usually used to evaluate accelerational terms in the total pressure drop of gas-liquid flow (Yue et al, 2008(Yue et al, , 2009 There are already plenty of literature studies that consider void fraction in small/micro-capillaries or channels (Choi et al, 2011;Chung and Kawaji, 2004;Ide et al, 2007;Kawahara et al, 2009Kawahara et al, , 2011Kawahara et al, , 2005Saisorn and Wongwises, 2009Xiong and Chung, 2007;Yue et al, 2008). Generally, the void fraction correlation for microchannels as a function of volumetric quality (β) can be classified to two types: linear relationship of Armand-type α¼C A β and nonlinear relationship of α¼C 1 β 0.5 /(1-C 2 β 0.5 ).…”

Two-phase air–water flow in micro-channels: An investigation of the viscosity models for pressure drop prediction

“…By subtracting the accelerational term and sudden contraction component from the total pressure drop, the frictional pressure drop data are obtained. Further details regarding the calculation method are available in Saisorn and Wongwises [15]. The obtained frictional pressure drop data are subsequently compared with the homogeneous flow predictions, taking into account several existing viscosity models.…”

Two-Phase Flow Phenomena in a Horizontal Pipe With a Sudden Contraction: Effects of Contraction Ratio on Film Behaviour

“…They found that the entering flow direction of air-water flows was strongly dependent on the flow patterns upstream the junction. Saisorn and Wongwises [11] compared air-water flows through a horizontal circular micro-channel with two-phase flow through ordinarily size channels. They classified the observed flow patterns into three flow regimes and showed comparisons of the observed flow patterns with the flow regime maps proposed by some previous researchers.…”