Elasticity suppresses viscous fingering in a reactive Hele‐Shaw cell Artikel uri icon

Open Access

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Peer Reviewed

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Abstract

  • We consider a system of two liquids in a Hele‐Shaw cell that form a viscoelastic material layer between them by a chemical reaction. Is has been demonstrated that this system leads to a fingering instability, supposedly by the elasticity of the newly created material phase. To explore this mechanism we employ a novel phase‐field model [1], which can handle fluid‐structure interaction involving growing elastic materials. Assuming the newly created phase to be a viscoelastic Kelvin‐Voigt material, we find that this mechanism alone does not explain the experimentally observed fingering. Imposing a viscosity contrast between the materials, we even find the presence of elasticity to suppress any viscous fingering.

Veröffentlichungszeitpunkt

  • November 1, 2019