NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Numerical simulation of three-dimensional self-gravitating flowThe three-dimensional flow of a self-gravitating fluid is numerically simulated using a Fourier pseudospectral method with a logarithmic variable formulation. Two cases with zero total angular momentum are studied in detail, a 32(exp 3) simulation (Run A) and a 64(exp 3) simulation (Run B). Other than the grid size, the primary differences between the two cases are that Run A modeled atomic hydrogen and had considerably more compressible motion initially than Run B, which modeled molecular hydrogen. ('Compressible motion' is that part of the velocity which has zero curl, but non-zero divergence). The numerical results indicate that gravitational collapse can proceed in a variety of ways. In Run A, collapse led to an elongated tube-like structure, while in Run B, collapse led to a flatter, disk-like structure.
Document ID
19950060195
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Shebalin, J. V.
(NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 16, 2013
Publication Date
August 1, 1994
Publication Information
Publication: Astronomy and Astrophysics
Volume: 288
Issue: 1
ISSN: 0004-6361
Subject Category
Astrophysics
Accession Number
95A91794
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available