Bibcode
Petrovay, K.
Referencia bibliográfica
International Astronomical Union. Symposium no. 185. New Eyes to See Inside the Sun and Stars, edited by Franz-Ludwig Deubner, Joergen Christensen-Dalsgaard, and Don Kurtz. Kyoto, Japan, 18-22 August, 1997, p. 121.
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0
1998
Número de citas
2
Número de citas referidas
1
Descripción
Apart from the solar core, the overshoot layer below the convective zone
is the layer where some discrepancies between the standard and seismic
solar models continue to exist. Non-local mixing length models are in
clear conflict with the seismic evidence. A major difficulty for the
development of more sophisticated models is the large degree of
arbitrariness in formulating expressions for input parameters like the
length scale. We propose that the application of the k-epsilon modelling
approach, widely used in physics and engineering, could help in
alleviating these difficulties. We present some simple overshoot models
calculated with this approach, and we point out that the resulting
expression of the length scale naturally reduces to the usual mixing
length expression (proportional to the pressure scale height) well
inside the convectively unstable region. Implications for the solar Li
problem and for dynamo theory will also be discussed.