Experimental and computational investigation of interfacial shear along a wavy two-phase interface

Mascarenhas, Nikhin; Lee, Hyoungsoon; Mudawar, Issam

doi:10.1016/j.ijheatmasstransfer.2015.01.096

Cited by 9 publications

(2 citation statements)

References 51 publications

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“…Mascarenhas et al [20] theoretically investigated a gas-liquid two-phase flow in a horizontal channel, and vortex shedding after wave crest was proved with the computational results of that gas flow field over a wavy interface. Compared with a gas-liquid two-phase flow in a horizontal pipe at atmosphere, the gas phase density at high pressure in this study is amplified to be ten times greater than that of air at atmosphere; the vortex shedding after the wave crest becomes much more strong and it accounts for the liquid film splitting, which delays the transition from wave-stratified flow to intermittent flow.…”

Section: Flow Pattern Mapmentioning

confidence: 96%

“…As a result, it is difficult to deduce and formulate interfacial friction factor with fluids Reynolds numbers simply. Mascarenhas et al [20] theoretically investigated the shear stress on wavy interface by solving unsteady N-S equations, and the shear stress was found to vary periodically for different phase angles along the wave. Belt et al [21] proved the relationship between the interfacial friction factor and film thickness, which was more easily obtainable than the function of film profile.…”

Section: Introductionmentioning

confidence: 99%

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Experimental Study on Gas-Liquid Two-Phase Stratified Flow at High Pressure in a Horizontal Pipe

Wang,

Yu,

Liu

et al. 2024

Energies

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This study investigates wave-stratified flow in a horizontal pipe at high pressure, and flow characteristics are obtained, such as flow pattern map, liquid film thickness, and pressure drop. Compared with a flow pattern map of a gas-liquid two-phase flow carried out at atmosphere, stratified flow zone is depressed with increasing system pressure and the critical gas superficial velocity decreases for smooth-wave-stratified flow transition, while the critical liquid superficial velocity increases for stratified-intermittent transition. On one hand, the compressed air results in an increase in momentum transfer between gas and liquid phases, which accounts for the smaller gas superficial velocity that is encountered in both smooth-wave and stratified-annular flow transition at higher pressure. One the other hand, it slows down the liquid below the crest, and it makes the interface wave crest unstable and split for the vortex shedding behind the wave crest, which accounts for flow regime transition in gas-liquid two-phase flows in pipelines. As a result, stratified-intermittent flow transition is depressed and delayed. The pressure influence on the liquid film profile is analyzed, and relationships between film thickness and dimensionless numbers are studied, such as liquid Weber number and gas Weber number. Friction factors on different interfaces at high pressure are studied, and new empirical formulas are deduced..

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Section: Flow Pattern Mapmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%