CESAM swMATH ID: 41162 Software Authors: Pierre Morel, Yveline Lebreton Description: CESAM: a free code for stellar evolution calculations. The Cesam code is a consistent set of programs and routines which perform calculations of 1D quasi-hydrostatic stellar evolution including microscopic diffusion of chemical species and diffusion of angular momentum. The solution of the quasi-static equilibrium is performed by a collocation method based on piecewise polynomials approximations projected on a B-spline basis; that allows stable and robust calculations, and the exact restitution of the solution, not only at grid points, even for the discontinuous variables. Other advantages are the monitoring by only one parameter of the accuracy and its improvement by super-convergence. An automatic mesh refinement has been designed for adjusting the localisations of grid points according to the changes of unknowns. For standard models, the evolution of the chemical composition is solved by stiffly stable schemes of orders up to four; in the convection zones mixing and evolution of chemical are simultaneous. The solution of the diffusion equation employs the Galerkin finite elements scheme; the mixing of chemicals is then performed by a strong turbulent diffusion. A precise restoration of the atmosphere is allowed for. Homepage: https://arxiv.org/abs/0801.2019 Related Software: GRjunction; JFNK; CGS Cited in: 4 Publications all top 5 Cited by 13 Authors 2 Rieutord, Michel 1 Baglin, A. 1 Ballot, J. 1 Baruteau, C. 1 Dupret, Marc-Antoine 1 Espinosa Lara, Francisco 1 Heisenberg, Lavinia 1 Jiménez, Jose Beltrán 1 Mirouh, G. M. 1 Olmo, Gonzalo J. 1 Ozel, N. 1 Putigny, Bertrand 1 Rubiera-Garcia, Diego Cited in 4 Serials 1 Astrophysics and Space Science 1 Journal of Computational Physics 1 Journal of Fluid Mechanics 1 Physics Reports Cited in 4 Fields 4 Astronomy and astrophysics (85-XX) 2 Fluid mechanics (76-XX) 1 Statistics (62-XX) 1 Relativity and gravitational theory (83-XX) Citations by Year