Homogenizing fluid transport in stratified porous media using an elastic flow instability

Christopher A. Browne, Richard B. Huang, Callie W. Zheng, Sujit S. Datta

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Many key environmental, industrial and energy processes rely on controlling fluid transport within subsurface porous media. These media are typically structurally heterogeneous, often with vertically layered strata of distinct permeabilities-leading to uneven partitioning of flow across strata, which can be undesirable. Here, using direct in situ visualization, we demonstrate that polymer additives can homogenize this flow by inducing a purely elastic flow instability that generates random spatio-Temporal fluctuations and excess flow resistance in individual strata. In particular, we find that this instability arises at smaller imposed flow rates in higher-permeability strata, diverting flow towards lower-permeability strata and helping to homogenize the flow. Guided by the experiments, we develop a parallel-resistor model that quantitatively predicts the flow rate at which this homogenization is optimized for a given stratified medium. Thus, our work provides a new approach to homogenizing fluid and passive scalar transport in heterogeneous porous media.

Original languageEnglish (US)
Article numberA30
JournalJournal of Fluid Mechanics
Volume963
DOIs
StatePublished - May 19 2023
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Applied Mathematics

Keywords

  • polymers
  • porous media
  • viscoelasticity

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