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.
|Number of pages
|European Journal of Mechanics, B/Fluids
|Published - Jan 1 1995
ASJC Scopus subject areas
- Mathematical Physics
- General Physics and Astronomy