Abonnement à la biblothèque: Guest

ISSN Online: 2377-424X

ISBN Print: 0-89116-559-2

International Heat Transfer Conference 8
August, 17-22, 1986, San Francisco, USA

CONVECTIVE INSTABILITY PROBLEM OF A HORIZONTAL LAYER OF AN ELECTRICALLY CONDUCTING FLUID UNDER VERTICAL MAGNETIC FIELD

Get access (open in a dialog) DOI: 10.1615/IHTC8.2850
pages 1377-1382

Résumé

The onset of natural convection in an electrically conducting fluid confined within a horizontal container is analyzed theoretically for the case that the fluid is subjected to a vertical temperature gradient and vertical magnetic field.
Numerical analysis is carried out for the fluid layer in circular cylindrical containers. Rayleigh number, Hartmann number and the aspect ratio of the container are taken as variables.
It is found that both the critical Rayleigh number and the number of rolls which generate at the critical point increase as the intensity of magnetic field increases, and that the effect of aspect ratio of the liquid layer on the critical Rayleigh number and flow patterns vanishes when the intensity of the magnetic field is sufficiently large.