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- Title
MHD effect on the development of thermocapillary convection in a two-layer fluid system.
- Authors
Xiaoming Zhou; Hulin Huang
- Abstract
To understand the effects of magnetic fields on the evolution behaviours of thermocapillary convection in a two-layer fluid system under the absence of gravity, we conducted a series of unsteady three-dimensional numerical simulations of thermocapillary flows in a rectangular cavity. The results show that the convective cell merging process under x direction magnetic field is decelerated in the encapsulant, but that in the melt is accelerated; magnetic field in z direction decelerates the convective cells merging in the melt and encapsulant greatly; the effect of magnetic field in y direction on the convective cell merging is weak. The maximum vorticity magnitude of thermocapillary convection 58.3 s−1 at fully developed without magnetic field is reduced to 53.4, 54.4 and 20.7 s−1 under magnetic fields in x, y and z directions, respectively.
- Subjects
VORTEX motion; MAGNETIC fields; HEAT convection; CRYSTAL growth; GRAVITY
- Publication
International Journal of Low Carbon Technologies, 2009, Vol 4, Issue 4, p238
- ISSN
1748-1317
- Publication type
Article
- DOI
10.1093/ijlct/ctp031