Multiphase lattice Boltzmann simulations of buoyancy-induced flow of two immiscible fluids with different viscosities

Prasanna R. Redapangu, Surya Pratap Vanka, Kirti Chandra Sahu

Research output: Contribution to journalArticle

Abstract

We study the effects of viscosity differential on buoyancy-induced interpenetration of two immiscible fluids in a tilted channel using a two-phase lattice Boltzmann method implemented on a graphics processing unit. The effects of viscosity differential on the flow structures, average density profiles and front velocities are studied. Relatively stable fingers are observed for high viscosity ratios. The intensity of the interfacial instabilities and the transverse interpenetration of the fluids are seen to increase with decreasing viscosity differential of the fluids.

Original languageEnglish (US)
Pages (from-to)105-114
Number of pages10
JournalEuropean Journal of Mechanics, B/Fluids
Volume34
DOIs
StatePublished - Jul 1 2012

Fingerprint

Immiscible Fluids
Lattice Boltzmann
Buoyancy
buoyancy
Viscosity
viscosity
fluids
Simulation
simulation
Interfacial Instability
Fluid
Density Profile
Lattice Boltzmann Method
Graphics Processing Unit
Transverse
profiles

Keywords

  • Fluid mechanics
  • Interface
  • Laminar flow
  • Lattice Boltzmann simulation
  • Mixing
  • Multiphase flow

ASJC Scopus subject areas

  • Mathematical Physics
  • Physics and Astronomy(all)

Cite this

Multiphase lattice Boltzmann simulations of buoyancy-induced flow of two immiscible fluids with different viscosities. / Redapangu, Prasanna R.; Vanka, Surya Pratap; Sahu, Kirti Chandra.

In: European Journal of Mechanics, B/Fluids, Vol. 34, 01.07.2012, p. 105-114.

Research output: Contribution to journalArticle

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