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A Comparative Study of Computational Methods in Cosmic Gas Dynamics

Geert Dick van AlbadaBram van LeerWilliam W. Roberts (Jr.)

出版	Inst. for Computer Applications in Science and Engineering, NASA Langley Research Center, 1981
URL	http://books.google.com.hk/books?id=eG3uHAAACAAJ&hl=&source=gbs_api

註釋

"In search of reliable computational methods for cosmic flow problems, we apply several commonly used algorithms, and one new algorithm, to a representative problem in galactic gas dynamics. A careful choice of the algorithm used in a calculation is found to be of the utmost importance in obtaining reliable results. Two methods most commonly employed in astronomy (the Beam scheme and FCT methods) prove to be highly unsuitable for out test problem. The penalty in programming effort and computer time per grid point required for the best second-order accurate codes tested is more than offset by the improvement in accuracy obtained and the possibility to reduce the number of points in a grid" -- abstract.