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Science 3 October 1986:
Vol. 234. no. 4772, pp. 61 - 64
DOI: 10.1126/science.234.4772.61
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Articles

Laboratory Experiments on Planetary and Stellar Convection Performed on Spacelab 3

J. E. HART 1, J. TOOMRE 1, A. E. DEANE 1, N. E. HURLBURT 1, G. A. GLATZMAIER 2, G. H. FICHTL 3, F. LESLIE 3, W. W. FOWLIS 3, and P. A. GILMAN 4

1 Department of Astrophysical, Planetary, and Atmospheric Sciences and Joint Institute for Laboratory Astrophysics, University of Colorado, Boulder, CO 80309.
2 Los Alamos National Laboratory, Los Alamos, NM 87545.
3 NASA Marshall Space Flight Center, Huntsville, AL 35812.
4 High Altitude Observatory, National Center for Atmospheric Research, Boulder, CO 80307.

Experiments on thermal convection in a rotating, differentially heated hemispherical shell with a radial buoyancy force were conducted in an orbiting microgravity laboratory. A variety of convective structures, or planforms, were observed, depending on the magnitude of the rotation and the nature of the imposed heating distribution. The results are compared with numerical simulations that can be conducted at the more modest heating rates, and suggest possible regimes of motion in rotating planets and stars.

Submitted on April 3, 1986
Accepted on July 1, 1986


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