An analytical model for a liquid plug moving in curved microchannels
Wong, Teck Neng
Date of Issue2010
School of Mechanical and Aerospace Engineering
Droplet-based microfluidics has wide applications and triggers numerous researchers’ interest. It is significant to study the flow field inside a droplet moving in microchannels. This paper presents an analytical method to investigate the flow field inside a confined droplet (a plug) moving in curved microchannels with high aspect ratio. The flow field is compared against a one-dimensional solution and the published experimental data. The effects of the plug length and the curvature on the flow pattern and the flow resistance are studied. The results suggest that the vortex pattern of the plug can be controlled by designing the channel geometry.
International journal of heat and mass transfer
© 2010 Elsevier Ltd. This is the author created version of a work that has been peer reviewed and accepted for publication by International journal of heat and mass transfer, Elsevier Ltd. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: http://dx.doi.org.ezlibproxy1.ntu.edu.sg/10.1016/j.ijheatmasstransfer.2009.12.058.