Bénard–Marangoni convection in a small circular container: influence of the Biot and Prandtl numbers on pattern dynamics and free surface deformation

Bénard–Marangoni convection in a small circular container: influence of the Biot and Prandtl... We studied, experimentally, the pattern dynamics and free surface deformation in Bénard–Marangoni convection, in a circular container (aspect ratio = 6). The free surface deformation fields were visualized by interferometry and temperature fields by infrared thermography. We considered the influence of the Marangoni (up to 2,623), Biot and Prandtl numbers. More dynamics are induced by increasing the Biot number and transition to a time-dependent flow has been observed. Conversely, increasing the Prandtl number reduces the dynamics. The deformation increases as a function of the Marangoni number until it reaches asymptotic values, which are functions of the Biot and Prandtl numbers. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Experiments in Fluids Springer Journals

Bénard–Marangoni convection in a small circular container: influence of the Biot and Prandtl numbers on pattern dynamics and free surface deformation

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Publisher
Springer-Verlag
Copyright
Copyright © 2007 by Springer-Verlag
Subject
Engineering; Engineering Fluid Dynamics; Fluid- and Aerodynamics; Engineering Thermodynamics, Heat and Mass Transfer
ISSN
0723-4864
eISSN
1432-1114
D.O.I.
10.1007/s00348-007-0323-1
Publisher site
See Article on Publisher Site

Abstract

We studied, experimentally, the pattern dynamics and free surface deformation in Bénard–Marangoni convection, in a circular container (aspect ratio = 6). The free surface deformation fields were visualized by interferometry and temperature fields by infrared thermography. We considered the influence of the Marangoni (up to 2,623), Biot and Prandtl numbers. More dynamics are induced by increasing the Biot number and transition to a time-dependent flow has been observed. Conversely, increasing the Prandtl number reduces the dynamics. The deformation increases as a function of the Marangoni number until it reaches asymptotic values, which are functions of the Biot and Prandtl numbers.

Journal

Experiments in FluidsSpringer Journals

Published: Aug 24, 2007

References

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