A new scheme of calculation of stellar structure

Statistics – Computation

Scientific paper

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Main Sequence Stars, Stellar Evolution, Stellar Structure, Computational Astrophysics, Convective Heat Transfer, Differential Equations, Energy Transfer, Stellar Cores, Stellar Models

Scientific paper

A new scheme for calculating stellar structure has been developed which incorporates a non-local treatment of convection. In order to determine the applicability of the scheme, five zero main sequence (ZAMS) stellar models were calculated using both local and non-local convection treatments. It is shown that the differences in convective energy transport in the connective zones of |he local and non-local models were negligible and temperature gradients approached the adiabatic gradients in the connective core. Turbulent fluctuations of velocity and temperature were found deep inside the stable connective layers. It is concluded that the method was effective in removing difficulties associated with semi-convection treatments in ZAMS models. A summary of the numerical results is given in a table.

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