The calculation of the collapse of a rotating gas cloud on a Lagrangian grid

Details The calculation of the collapse of a rotating gas cloud on a Lagrangian grid The calculation of the collapse of a rotating gas cloud on a Lagrangian grid

Jun 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987azh....64..495a&link_type=abstract

Astronomicheskii Zhurnal (ISSN 0004-6299), vol. 64, May-June 1987, p. 495-508. In Russian.

Statistics

Computation

4

Computational Astrophysics, Cosmic Gases, Gravitational Collapse, Lagrange Coordinates, Molecular Clouds, Rotating Fluids, Angular Momentum, Astronomical Models, Euler-Lagrange Equation

Scientific paper

A method is developed for calculation of two-dimensional collapse of self-gravitating objects based on the use of the Lagrangian scheme with a triangular net. An investigation of these methods is made on different simple models, and a sufficiently good precision of the method is shown. A calculation is made of the collapse of a uniform rotating cloud for two values of the angular momentum. The flat disk-like body was obtained as a result in both cases. The previous calculations of the same problem in the Eulerian scheme have led to the formation of the ring for the higher value of the angular momentum. The results are in qualitative agreement with the previous calculations where Lagrangian scheme had been used.

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