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MHD effect on the development of thermocapillary convection in a two-layer fluid system

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  • 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-super- - 1 at fully developed without magnetic field is reduced to 53.4, 54.4 and 20.7 s-super- - 1 under magnetic fields in x, y and z directions, respectively. Copyright The Author 2009. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org, Oxford University Press.

Suggested Citation

  • Xiaoming Zhou & Hulin Huang, 2009. "MHD effect on the development of thermocapillary convection in a two-layer fluid system," International Journal of Low-Carbon Technologies, Oxford University Press, vol. 4(4), pages 238-245, July.
    • Handle: RePEc:oup:ijlctc:v:4:y:2009:i:4:p:238-245
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    File URL: http://hdl.handle.net/10.1093/ijlct/ctp031
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