Publication Abstracts

Canuto 2000

Canuto, V.M., 2000: Turbulent convection: Is 2D a good proxy of 3D? Astron. Astrophys., 357, 177-179.

Several authors recently carried out 2D simulations of turbulent conection for both solar and massive stars. Fitting the 2D results with the MLT, they obtain that αMLT > 1, specifically 1.4 ≤ αMLT ≤ 1.8. The authors further suggest that this methodology could be used to calibrate the MLT used in stellar evolutionary codes. We suggest the opposite viewpoint: the 2D results show that MLT is internally inconsistent because the result αMLT > 1 violates the MLT basic assumption that αMLT < 1. When the 2D results are fitted with the CM model, αMLT < 1, in accord with the basic tenet of the model.

On the other hand, since both MLT and CM are local models, they should be replaced by the next generation of non-local, time dependent turbulence models which we discuss in some detail.

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BibTeX Citation

@article{ca09300d,
  author={Canuto, V. M.},
  title={Turbulent convection: Is 2D a good proxy of 3D?},
  year={2000},
  journal={Astron. Astrophys.},
  volume={357},
  pages={177--179},
}

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RIS Citation

TY  - JOUR
ID  - ca09300d
AU  - Canuto, V. M.
PY  - 2000
TI  - Turbulent convection: Is 2D a good proxy of 3D?
JA  - Astron. Astrophys.
VL  - 357
SP  - 177
EP  - 179
ER  -

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