Magnetic field stabilization and dispersed-phase pressure of bubbly ferro-fluids at high Reynolds numbers

A. K. Didwania, A. S. Sangani

Research output: Contribution to journalArticle

Abstract

We examine the effect of an uniform magnetic field on the microstructural dynamics of a bubbly ferrofluid at large Reynolds number by employing a simulation technique developed recently by Sangani and Didwania [1993 a, b]. Our numerical results show that a magnetic field of sufficient strength when aligned in the direction of gravity eliminates voidage non-uniformities leading to stabilization of the flow. We also compute the various macroscopic properties of the flow like added mass coefficient. viscous drag coefficient and the dispersed phase pressure. For the stabilized flow, the dispersed phase pressure is always positive and increases with increasing bubble concentration, a result in agreement with earlier continuum linear stability analyses.

Original languageEnglish (US)
Pages (from-to)91-109
Number of pages19
JournalEuropean Journal of Mechanics, B/Fluids
Volume14
Issue number1
StatePublished - Jan 1 1995
Externally publishedYes

ASJC Scopus subject areas

  • Mathematical Physics
  • Physics and Astronomy(all)

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