Two‐Phase Flow in Miniature Geometries: Comparison of Gas‐Liquid and Liquid‐Liquid Flows. Issue 1 (1st February 2019)

• Record Type: Journal Article
• Authors: Verma, Raj Kumar; Ghosh, Sumana
• Is Part Of: ChemBioEng reviews. Volume 6:Issue 1(2019)
• Page Start: 5
• Page End: 16
• Publication Date: 2019-02-01
• Subjects: Gas‐liquid flow -- Liquid‐liquid flow -- Pressure drop -- Two‐phase flow -- Volume fraction; Chemical engineering -- Periodicals; Biochemical engineering -- Periodicals; Biotechnology -- Periodicals; 660.05
• DOI: 10.1002/cben.201800016
• Languages: English
• ISSNs: 2196-9744

Abstract

Abstract: Miniature reactors are important devices used for process intensification. They provide a larger surface‐to‐volume ratio and enhance mass transfer and heat transfer significantly. This paper presents a review of transport processes of gas‐liquid and liquid‐liquid two‐phase flow in miniature geometries, in which the hydraulic diameter of the channel lies between 0.2 mm to 3.0 mm. Correlations for predicting the pressure drop in case of both adiabatic and non‐adiabatic gas‐liquid flows are summarized. Gas‐liquid distributions are observed to be different from liquid‐liquid flow distributions. Cross‐sectional geometry does not have any effect on the flow regimes in this range. In case of liquid‐liquid flow, the wall material plays an important role on flow distribution. Abstract : Miniaturization is a widely used tool for process intensification in various industries due to the larger surface‐to‐volume ratio, enhanced head and mass transfer as well as the diminished use of reactants. This review summarizes the transport processes in miniature geometries with two‐phase flow by compar gas‐liquid flows with liquid‐liquid flows.