Flow of viscoelastic surfactants through porous media

Title

Flow of viscoelastic surfactants through porous media

 Author

De, S. (Eindhoven University of Technology)
Koesen, S. P. (Eindhoven University of Technology)
Maitri, R. V. (Eindhoven University of Technology)
Golombok, M. (Eindhoven University of Technology; Shell Global Solutions International B.V.)
Padding, J.T. (TU Delft Intensified Reaction and Separation Systems) ORCID 0000-0003-4161-0748
van Santvoort, J. F.M. (Eindhoven University of Technology)

Date

2018

 Abstract

We compare the flow behavior of viscoelastic surfactant (VES) solutions and Newtonian fluids through two different model porous media having similar permeability: (a) a 3D random packed bed and (b) a microchannel with a periodically spaced pillars. The former provides much larger flow resistance at the same apparent shear rate compared to the latter. The flow profile in the 3D packed bed cannot be observed since it is a closed system. However, visualization of the flow profile in the microchannel shows strong spatial and temporal flow instabilities in VES fluids appear above a critical shear rate. The onset of such elastic instabilities correlates to the flow rate where increased flow resistance is observed. The elastic instabilities are attributed to the formation of transient shear induced structures. The experiments provide a detailed insight into the complex interplay between the pore scale geometry and rheology of VES in the creeping flow regime.


 Subject

complex fluids
fluid mechanics
porous media
rheology

 To reference this document use:

http://resolver.tudelft.nl/uuid:986dbaea-16cd-42b0-9056-f6d1c91fb7a0

 DOI

https://doi.org/10.1002/aic.15960

 Embargo date

2019-01-03

 ISSN

0001-1541

 Source

AIChE Journal, 64 (2), 773-781

 Part of collection

Institutional Repository

 Document type

journal article

 Rights

© 2018 S. De, S. P. Koesen, R. V. Maitri, M. Golombok, J.T. Padding, J. F.M. van Santvoort
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