What is it about?

Taylor flow is a strategy-aimed flow to transfer conventional single-phase into a more efficient two-phase flow, resulting in an enhanced momentum/heat/mass transfer rate and many other advantages. Multiphase flow in micro-sized structures refers to a microflow in which two or more distinct phases are recognizable, i.e., a carrying or continuous phase and one or more dispersed phases. A two-phase flow denotes a combination of two distinct phases, including gas, liquid, and solid particles. Gas-liquid (GL) and liquid-liquid (LL) are two common types of multiphase flow in microchannels encountered in various practical applications, such as biomedical, pharmacological, engineering, and commercial. Immiscible LL two-phase flows can also be observed in many industrial applications, where the dispersive liquid flow is introduced as droplets into the carrying liquid flow.

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Why is it important?

To date, Taylor flow has focused on the processes involving gas–liquid and liquid–liquid two-phase systems in microchannels over various biomedical, pharmaceutical, industrial, and commercial applications. Appropriately micro-structured design is, therefore, a key consideration for equipment dealing with transport phenomena. This review paper highlights the hydrodynamic aspects of gas-liquid and liquid-liquid two-phase flows in microchannels.

Perspectives

I am proud to do a comprehensive literature review on the field of Taylor flow before stating my actual experiments and analysis. That was a great time to familiarize me with the topic and provide one-stop reading material for those interested in Taylor flow. The review’s main objective is to identify the considerable opportunity for further development of microflows and provide suggestions for researchers in the field. Available correlations proposed for the transition of flow patterns are presented. A literature review on flow regime, slug length, and pressure drop is also carried out.

Dr Amin Etminan
Memorial University of Newfoundland

Read the Original

This page is a summary of: A Review on the Hydrodynamics of Taylor Flow in Microchannels: Experimental and Computational Studies, Processes, May 2021, MDPI AG,
DOI: 10.3390/pr9050870.
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