An Analytical-Numerical Model for Two-Phase Slug Flow through a Sudden Area Change in Microchannels
| Autor: | William E. Lear, S. A. Sherif, A. Mehdizadeh Momen |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Materials science
Mechanical Engineering Area change lcsh:Mechanical engineering and machinery 02 engineering and technology Mechanics Condensed Matter Physics Slug flow 01 natural sciences 010305 fluids & plasmas Physics::Fluid Dynamics 020303 mechanical engineering & transports 0203 mechanical engineering Mechanics of Materials Phase (matter) 0103 physical sciences Microchannels Two-phase flow Sudden-area change lcsh:TJ1-1570 |
| Zdroj: | Journal of Applied Fluid Mechanics, Vol 9, Iss 4, Pp 1839-1850 (2016) |
| ISSN: | 1735-3572 |
| Popis: | In this paper, two new analytical models have been developed to calculate two-phase slug flow pressure drop in microchannels through a sudden contraction. Even though many studies have been reported on two-phase flow in microchannels, considerable discrepancies still exist, mainly due to the difficulties in experimental setup and measurements. Numerical simulations were performed to support the new analytical models and to explore in more detail the physics of the flow in microchannels with a sudden contraction. Both analytical and numerical results were compared to the available experimental data and other empirical correlations. Results show that models, which were developed based on the slug and semi-slug assumptions, agree well with experiments in microchannels. Moreover, in contrast to the previous empirical correlations which were tuned for a specific geometry, the new analytical models are capable of taking geometrical parameters as well as flow conditions into account. |
| Databáze: | OpenAIRE |
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