Binary Interaction Approximation to N-Body Problems


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Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/46976

Title:	Binary Interaction Approximation to N-Body Problems
Authors:	Oikawa, Shun-ichi Browse this author →KAKEN DB
Authors:	Funasaka, Hideo Browse this author
Keywords:	N-body problem
	algebraic approximation
	binary interaction approximation
	variable step size
	parallel computation
Issue Date:	2010
Publisher:	Japan Society of Plasma Science and Nuclear Fusion Research
Journal Title:	Plasma and Fusion Research
Volume:	5
Start Page:	S1051
Publisher DOI:	10.1585/pfr.5.S1051
Abstract:	The binary interaction approximation (BIA) to N-body problems is proposed. The BIA conserves total linear momenta in principle. Other invariants, such as the total angular momentum and total energy, are conserved to at least 12 effective digits for a two-dimensional hydrogen plasma of T = 10 keV and n = 10^[20] m^[-3]. For such a plasma, the total CPU time of the BIA is found to scale as approximately N^[1.9], while the conventional direct integration method scales as approximately N^[3].
Type:	article
URI:	http://hdl.handle.net/2115/46976
Appears in Collections:	工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 及川俊一

OAI-PMH ( junii2 , jpcoar_1.0 )

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