Integral constraints on convective overshooting

Details Integral constraints on convective overshooting Integral constraints on convective overshooting

Mar 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...211..361r&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 211, no. 2, March 1989, p. 361-364.

Physics

Fluid Dynamics

50

Convection, Stellar Evolution, Stellar Models, Dissipation, Fluid Dynamics, Mixing Length Flow Theory, Nonadiabatic Conditions, Stellar Structure

Scientific paper

The integral constraint used to estimate the uncertainty in present knowledge of convection and convective overshooting is rederived for the general compressible case and shown to reduce to the previous result for almost adiabatically stratified convective zones when viscous dissipation is neglected. It is further shown that the objections by Baker and Kuhfuss (1987) require the stratification to be strongly nonadiabatic and that this then renders invalid standard models of stellar structure. Evidence from solar oscillations does not indicate such a large departure from adiabaticity.

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