Laterally stratified flow in a curved microchannel

Laterally stratified flow in a curved microchannel International Journal of Multiphase Flow 75 (2015) 39–53 Contents lists available at ScienceDirect International Journal of Multiphase Flow journal homepage: www.elsevier.com/locate/ijmulflow Laterally stratified flow in a curved microchannel Jason R. Picardo, S. Pushpavanam Department of Chemical Engineering, Indian Institute of Technology Madras, Chennai 600 036, India article i nfo abstract Article history: Laterally stratified fully developed flow in a curved channel is investigated, in this work. Motivated by Received 18 March 2015 applications in microchannels, we focus on the limit of small Reynolds numbers. The method of domain Received in revised form 18 April 2015 perturbation is used to obtain an analytical solution, by considering the curvature ratio of the channel Accepted 22 April 2015 (ratio of the channel’s width to its radius of curvature) to be a small parameter. Centrifugal forces give Available online 16 May 2015 rise to multiple pairs of Dean vortices in the two fluids. Depending on the properties of the fluids and their holdups (volume fractions), one of the fluids dominates the flow and influences the flow pattern Keywords: within the other fluid. The multi-dimensional parameter space is divided into five different regions, each Two-phase characterized by a distinct vortex pattern. Centrifugal forces are http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png International Journal of Multiphase Flow Elsevier

Laterally stratified flow in a curved microchannel

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Publisher
Pergamon
Copyright
Copyright © 2015 Elsevier Ltd
ISSN
0301-9322
D.O.I.
10.1016/j.ijmultiphaseflow.2015.04.017
Publisher site
See Article on Publisher Site

Abstract

International Journal of Multiphase Flow 75 (2015) 39–53 Contents lists available at ScienceDirect International Journal of Multiphase Flow journal homepage: www.elsevier.com/locate/ijmulflow Laterally stratified flow in a curved microchannel Jason R. Picardo, S. Pushpavanam Department of Chemical Engineering, Indian Institute of Technology Madras, Chennai 600 036, India article i nfo abstract Article history: Laterally stratified fully developed flow in a curved channel is investigated, in this work. Motivated by Received 18 March 2015 applications in microchannels, we focus on the limit of small Reynolds numbers. The method of domain Received in revised form 18 April 2015 perturbation is used to obtain an analytical solution, by considering the curvature ratio of the channel Accepted 22 April 2015 (ratio of the channel’s width to its radius of curvature) to be a small parameter. Centrifugal forces give Available online 16 May 2015 rise to multiple pairs of Dean vortices in the two fluids. Depending on the properties of the fluids and their holdups (volume fractions), one of the fluids dominates the flow and influences the flow pattern Keywords: within the other fluid. The multi-dimensional parameter space is divided into five different regions, each Two-phase characterized by a distinct vortex pattern. Centrifugal forces are

Journal

International Journal of Multiphase FlowElsevier

Published: Oct 1, 2015

References

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