Imperial College London

Professor Omar K. Matar

Faculty of EngineeringDepartment of Chemical Engineering

Vice-Dean (Education), Faculty of Engineering
 
 
 
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Contact

 

+44 (0)20 7594 9618o.matar Website

 
 
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Assistant

 

Miss Nazma Mojid +44 (0)20 7594 3918

 
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Location

 

506ACE ExtensionSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Kahouadji:2018:10.1007/s10404-018-2149-y,
author = {Kahouadji, L and Nowak, E and Kovalchuk, N and Chergui, J and Juric, D and Shin, S and Simmons, MJH and Craster, RV and Matar, OK},
doi = {10.1007/s10404-018-2149-y},
journal = {MICROFLUIDICS AND NANOFLUIDICS},
title = {Simulation of immiscible liquid-liquid flows in complex microchannel geometries using a front-tracking scheme},
url = {http://dx.doi.org/10.1007/s10404-018-2149-y},
volume = {22},
year = {2018}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - The three-dimensional two-phase flow dynamics inside a microfluidic device of complex geometry is simulated using a parallel, hybrid front-tracking/level-set solver. The numerical framework employed circumvents numerous meshing issues normally associated with constructing complex geometries within typical computational fluid dynamics packages. The device considered in the present work is constructed via a module that defines solid objects by means of a static distance function. The construction combines primitive objects, such as a cylinder, a plane, and a torus, for instance, using simple geometrical operations. The numerical solutions predicted encompass dripping and jetting, and transitions in flow patterns are observed featuring the formation of drops, ‘pancakes’, plugs, and jets, over a wide range of flow rate ratios. We demonstrate the fact that vortex formation accompanies the development of certain flow patterns, and elucidate its role in their underlying mechanisms. Experimental visualisation with a high-speed imaging are also carried out. The numerical predictions are in excellent agreement with the experimental data.
AU - Kahouadji,L
AU - Nowak,E
AU - Kovalchuk,N
AU - Chergui,J
AU - Juric,D
AU - Shin,S
AU - Simmons,MJH
AU - Craster,RV
AU - Matar,OK
DO - 10.1007/s10404-018-2149-y
PY - 2018///
SN - 1613-4982
TI - Simulation of immiscible liquid-liquid flows in complex microchannel geometries using a front-tracking scheme
T2 - MICROFLUIDICS AND NANOFLUIDICS
UR - http://dx.doi.org/10.1007/s10404-018-2149-y
UR - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000448401100001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR - http://hdl.handle.net/10044/1/64316
VL - 22
ER -