The Presence of Microconvective Instability in Optically Induced Gratings
In the present work, attention is paid to some significant effects (phenomena) in forced Rayleigh scattering (FRS) experiments with an applied magnetic field, ∇ T ∥ H, which have not been analyzed before. The work deals with the idea that the experimentally observed effects are caused by microconvec...
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Published in | Journal of non-equilibrium thermodynamics Vol. 32; no. 3; pp. 331 - 340 |
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Main Authors | , |
Format | Journal Article |
Language | English |
Published |
Walter de Gruyter
19.09.2007
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Online Access | Get full text |
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Summary: | In the present work, attention is paid to some significant effects (phenomena) in forced Rayleigh scattering (FRS) experiments with an applied magnetic field, ∇ T ∥ H, which have not been analyzed before. The work deals with the idea that the experimentally observed effects are caused by microconvection. The dimensionless numbers Cm and Rm, which are responsible for the onset of microconvection, are calculated from experiments as well as from the linear stability analysis in a Hele-Shaw approximation. The problem of definition of the true values of diffusion and Soret coefficients from experiments and their field dependence, which are not affected by the assumed microconvection, is solved by original data processing. |
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Bibliography: | ArticleID:jnet.32.3.331 jnetdy.2007.025.pdf istex:00ADF2BCF847C25223C0861C48E7BFE2FAA1BC6D ark:/67375/QT4-BL0K1FB6-J |
ISSN: | 0340-0204 1437-4358 |
DOI: | 10.1515/JNETDY.2007.025 |