TY - JOUR

T1 - Ionic liquid-water flow in T-shaped microchannels with different aspect ratios

AU - Yagodnitsyna, Anna A.

AU - Kovalev, Alexander V.

AU - Bilsky, Artur V.

N1 - Publisher Copyright: © 2019 Institution of Chemical Engineers

PY - 2020/1/1

Y1 - 2020/1/1

N2 - In this article we investigate the influence of a rectangular microchannel aspect ratio on the liquid–liquid flow. An ionic liquid was chosen as one of the working fluids due to a vast scope of applications. Immiscible ionic liquid-water flow in T-shaped microchannels with 160 μm hydraulic diameter and aspect ratios equal to 2 and 4 was studied experimentally. Flow pattern maps were drawn and compared for two channels in terms of We*Oh dimensionless number. Parallel flow was shown to prevail for the channel with higher aspect ratio. The influence of channel aspect ratio on plug flow peculiarities was studied in detail. Plug length and velocity were measured at different bulk flow rates. Velocity fields in aqueous plugs were measured using the micro-PTV technique. Velocity circulations were calculated for different flow rates. Total circulation value inside plugs was found to be higher in the channel with the lower aspect ratio.

AB - In this article we investigate the influence of a rectangular microchannel aspect ratio on the liquid–liquid flow. An ionic liquid was chosen as one of the working fluids due to a vast scope of applications. Immiscible ionic liquid-water flow in T-shaped microchannels with 160 μm hydraulic diameter and aspect ratios equal to 2 and 4 was studied experimentally. Flow pattern maps were drawn and compared for two channels in terms of We*Oh dimensionless number. Parallel flow was shown to prevail for the channel with higher aspect ratio. The influence of channel aspect ratio on plug flow peculiarities was studied in detail. Plug length and velocity were measured at different bulk flow rates. Velocity fields in aqueous plugs were measured using the micro-PTV technique. Velocity circulations were calculated for different flow rates. Total circulation value inside plugs was found to be higher in the channel with the lower aspect ratio.

KW - Aspect ratio

KW - Flow pattern

KW - Ionic liquid

KW - Micro-PTV

KW - Microchannel

KW - 2-PHASE FLOW

KW - PATTERNS

KW - INTENSIFICATION

KW - CHANNEL SIZE

KW - SLUG-FLOW

KW - OIL

KW - FLUID

KW - RECTANGULAR MICROCHANNEL

KW - MASS-TRANSFER

KW - PLUG-FLOW

UR - http://www.scopus.com/inward/record.url?scp=85075211099&partnerID=8YFLogxK

U2 - 10.1016/j.cherd.2019.11.008

DO - 10.1016/j.cherd.2019.11.008

M3 - Article

AN - SCOPUS:85075211099

VL - 153

SP - 391

EP - 400

JO - Chemical Engineering Research and Design

JF - Chemical Engineering Research and Design

SN - 0263-8762

ER -