Influence of nonideal mixing properties on viscous fingering in micropillar array columns
| Autor: | W. De Malsche, Manly Callewaert, A. De Wit, Florence Haudin |
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| Přispěvatelé: | Chemical Engineering and Industrial Chemistry, Faculty of Engineering, Applied Physics and Photonics, Centre for Molecular Separation Science & Technology, Department of Bio-engineering Sciences, Chemical Engineering and Separation Science |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Fluid Flow and Transfer Processes
Materials science POROUS-MEDIA Computational Mechanics Mixing (process engineering) Mechanics Dispersion 01 natural sciences Linear-Stability Analysis 010305 fluids & plasmas Viscous fingering Viscosity Modeling and Simulation Phase (matter) 0103 physical sciences Nonmonotonic Viscosity Profiles Hele-Shaw Cell ethanol LIQUID-CHROMATOGRAPHY 010306 general physics Porous medium Miscible Displacements Simulation |
| Zdroj: | Physical Review Fluids |
| Popis: | Miscible viscous fingering is studied experimentally in the presence of a nonmonotonic viscosity profile due to nonideal mixing properties in a porous medium consisting in a micropillar array column used for chromatographic applications. In this setup, a mobile phase composed of an aqueous solution of methanol displaces a miscible finite-size sample containing mainlywater. Due to a local buildup by nonideal mixing of maxima in the viscosity profile, fingering is observed at both the frontal and rear miscible interfaces of the sample phase, however with different spatial extents. The influence on the fingering dynamics of the pressure in the column and of the viscosity of the mobile or sample phases is analyzed. |
| Databáze: | OpenAIRE |
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