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Experimental Observation of the Thermocapillary Driven Motion of Bubbles in a Molten Glass Under Low Gravity Conditions

Published online by Cambridge University Press:  15 February 2011

H. D. Smith ,
D. M. Mattox ,
W. R. Wilcox ,
R. S. Subramanian  and
M. Meyyappan
H. D. Smith
Affiliation:
Westinghouse R&D Center, Pittsburgh, PA 15235
D. M. Mattox
Affiliation:
Westinghouse R&D Center, Pittsburgh, PA 15235
W. R. Wilcox
Affiliation:
Clarkson College of Technology, Potsdam, NY 13676
R. S. Subramanian
Affiliation:
Clarkson College of Technology, Potsdam, NY 13676
M. Meyyappan
Affiliation:
Clarkson College of Technology, Potsdam, NY 13676
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Abstract

Theory and ground based studies of bubble behavior in a fluid in the presence of a temperature gradient strongly indicate the action of a thermocapillary force which causes the bubbles to move. This'phenomenon been considered in the traditional treatments of glass fining. To demonstrate that the observed motion conformed to theoretical prediction it was necessary to perform the experiment under low gravity conditions. NASA's SPAR program provided an excellent opportunity to do this.

A sodium borate melt containing a specific bubble array was subjected to a well defined temperature gradient for more than 4 minutes. The sample was contained in a platinum/ fused-silica cell which permitted photographic coverage of the experiment. Photographs were taken at one second intervals during the course of the experiment. They clearly show that the bubbles move toward the hot spot on the platinum heater strip. The observed motion is consistent with the theoretical predictions for the temperature gradients parallel and perpendicular to the heater strip.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 9 , 1981 , 279
Copyright
Copyright © Materials Research Society 1982

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References

REFERENCES

1.Nielson, G. F. and Weinberg, M. C., J. Non-Crystalline Solids, 23, 43 (1977).Google Scholar
2.Weinberg, M. C., Glass Industry, 22 (1978).Google Scholar
3.Kriedl, N. J. and Rindone, G. E., J. Non-Crystalline Solids, 38 & 39, 825 (1980).10.1016/0022-3093(80)90539-6Google Scholar
4.Rindone, G. E., Glass Industry, 38, 489 (1957).Google Scholar
5.Rindone, G. E., Glass Industry, 38, 561 (1957).Google Scholar
6.Scholes, S. R., Modern Glass Practice (Cahness Books, Boston, Mass., 1975) pg. 216.Google Scholar
7.Greene, C. H. and Gaffney, R. F., J. Am.Cer. Soc. 42, 273 (1959).Google Scholar
8.Cable, M., Clarke, A. R., Haroon, M. A., Glass Tech. 9, 101 (1968); 10, 15 (1969).Google Scholar
9.Nemec, L., J. Amer. Ceram. Soc., 60, (1977).Google Scholar
10.Young, N. O., Goldstein, J. S. and Block, M. J., J. Fluid Mech. 6, 350 (1959).Google Scholar
11.Roedder, E., 1965 Meeting of the Geological Society of America (from U.S. Geological Survey).Google Scholar
12.Wilcox, W. R., Ind. Eng. Chem. 61, 76 (March 1969).Google Scholar
13.Anthony, T. R. and Cline, H. E., Acta. Met. 20, 247 (1972).Google Scholar
14.Coriell, S. R., Hardy, S. C. and Cordes, M. R., “Melt Shape in Weightless Crystal Growth,” NBSIR 77–1208, Feb. 1977.Google Scholar
15.Smith, H. D., Mattox, D. M., Wilcox, W. R. and Subramanian, R. S., “Glass Fining Experiments in Zero Gravity,” Final Rept. to George C. Marshall Space Flight Center, Contract No. NAS8-32351, June 30, 1977.Google Scholar
16.Hardy, S. C., J. Colloid Interface Sci. 69, 157 (1979).Google Scholar
17.McGrew, J. L., Rehm, T. L. and Griskey, R. G., Appl. Sci. Res. 29, 195 (1974).Google Scholar
18.Thompson, R. L., deWitt, K. J. and Labus, T. L., Chem. Eng. Commun. 5, 299 (1980).Google Scholar
19.Subrapmanian, R. S., AIChE Journ. 27, 646, (1981).Google Scholar
20.Partlow, D.P., Smith, H. D. and Mattox, D. M., Phys. Chem. Glasses, 221 (1980).Google Scholar
21.Natusita, K., Watanabe, T., Kamiya, K. and Sakka, S., Phys. Chem. Glasses, 21, 78 (1980).Google Scholar
22.Shartsis, L., Capps, W. and Spinner, S., Jour. of Am. Cer. Soc., 36, 319 (1953).Google Scholar