TY - JOUR

T1 - Experimental and theoretical study of two-phase flow in wide microchannels

AU - Vozhakov, Ivan S.

AU - Ronshin, Fedor V.

N1 - Publisher Copyright: © 2019 Elsevier Ltd

PY - 2019/6/1

Y1 - 2019/6/1

N2 - Experimental and theoretical studies of the two-phase flow regimes in a wide microchannel with the height of 164 μm were performed. The ranges of parameters of the formation of the main flow regimes are determined: jet, bubble, churn, stratified, and annular. The pressure drop in single-phase and two-phase flows was measured. Using a flat flow model, we performed a theoretical study of the pressure drop and compared it with experimental data. Regular waves were experimentally detected in film flow regimes. The formation of waves on a liquid film was investigated, and characteristic wavelengths were measured. As for the theory, the study of linear stability of the stratified two-phase flow regime in a wide microchannel was performed. The comparison of numerical and experimental results indicated the validity of the proposed approach for modeling waves in film regime in wide microchannels.

AB - Experimental and theoretical studies of the two-phase flow regimes in a wide microchannel with the height of 164 μm were performed. The ranges of parameters of the formation of the main flow regimes are determined: jet, bubble, churn, stratified, and annular. The pressure drop in single-phase and two-phase flows was measured. Using a flat flow model, we performed a theoretical study of the pressure drop and compared it with experimental data. Regular waves were experimentally detected in film flow regimes. The formation of waves on a liquid film was investigated, and characteristic wavelengths were measured. As for the theory, the study of linear stability of the stratified two-phase flow regime in a wide microchannel was performed. The comparison of numerical and experimental results indicated the validity of the proposed approach for modeling waves in film regime in wide microchannels.

KW - Liquid film

KW - Pressure drop

KW - Two-phase flow

KW - Waves

KW - Wide microchannels

KW - INSTABILITY

KW - SINGLE

KW - HEAT-TRANSFER

KW - STABILITY

KW - REGIMES

KW - WAVES

KW - FRICTIONAL PRESSURE-DROP

KW - INTERFACE

KW - DYNAMICS

UR - http://www.scopus.com/inward/record.url?scp=85062461238&partnerID=8YFLogxK

U2 - 10.1016/j.ijheatmasstransfer.2019.02.099

DO - 10.1016/j.ijheatmasstransfer.2019.02.099

M3 - Article

AN - SCOPUS:85062461238

VL - 136

SP - 312

EP - 323

JO - International Journal of Heat and Mass Transfer

JF - International Journal of Heat and Mass Transfer

SN - 0017-9310

ER -