Computer Science – Numerical Analysis
Scientific paper
Jun 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991pggp.rept..419t&link_type=abstract
In NASA, Washington, Reports of Planetary Geology and Geophysics Program, 1990 p 419 (SEE N92-10728 01-91)
Computer Science
Numerical Analysis
Astronomical Models, Gravitational Collapse, Molecular Clouds, Nebulae, Numerical Analysis, Planetary Evolution, Protostars, Solar System, Angular Momentum, Gravitation, Hydrodynamic Equations, Radiative Transfer, Stellar Evolution, Three Dimensional Models, Turbulence, Two Dimensional Models
Scientific paper
Theoretical models are discussed of the collapse of a dense molecular cloud core to form the protosolar nebula that produce the sun and the planet. The theoretical models use the equations of hydrodynamics, gravitation, and radiative transfer to follow the time evolution of a cloud collapsing under its own self-gravity. Both semi-analytical and fully numerical solutions (in two and three spatial dimensions) were calculated by several workers, One challenge is to find a set of initial conditions that will lead to the formation of a suitable protosolar nebula. Detailed results are shown for 2-D models, both with and without turbulent viscosity for redistributing angular momentum, and for 3-D models investigating the strength of gravitational torques associated with nonaxisymmetry produced during the collapse phase.
Boss Alan P.
Tscharnuter Werner M.
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