Calibrating the Mixing‐Length Parameter for a Red Giant Envelope
Open Access
- 10 January 2000
- journal article
- research article
- Published by American Astronomical Society in The Astrophysical Journal
- Vol. 528 (2) , 896-906
- https://doi.org/10.1086/308211
Abstract
Two-dimensional hydrodynamical simulations were made to calibrate the mixing-length parameter for modeling red giants' convective envelopes. As was briefly reported in a recent paper by Asida & Tuchman, a comparison of simulations starting with models integrated with different values of the mixing-length parameter has been made. In this paper more results are presented, including tests of the spatial resolution and large-eddy simulation terms used by the numerical code. The consistent value of the mixing-length parameter was found to be 1.4 for a red giant of mass 1.2 M☉, core mass 0.96 M☉, luminosity 200 L☉, and metallicity Z = 0.001.Keywords
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