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Astrophysics and Space Science

, Volume 188, Issue 1, pp 159–164 | Cite as

A smoothing scheme for reducing field anisotropy inN-body simulation

  • W. Y. Chau
  • S. S. Mak
  • Y. W. Law
  • K. L. Chan
Article
  • 28 Downloads

Abstract

A method is proposed to reduce the field anisotropy inN-body calculations arising from the discretization of Poisson's equation in a particle-mesh scheme. Specifically, the mass is split (in addition to that employed in the mass assignment algorithm) over neighbouring points to create compensating higher-order multipoles. Improvement by factor 2 has been observed in the field calculations, and spurious geometric effects in the example of a 4000 particle free-fall collapse have been reduced.

Keywords

Anisotropy Field Calculation Geometric Effect Field Anisotropy Assignment Algorithm 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. Chan, K. L., Chau, W. Y., Jossop, C., and Jorgenson, H.: 1986, in P. Hut and S. McMillan (eds.),The Use of Super Computers in Stellar Dynamics, Springer Lecture Notes, Springer-Verlag, Berlin.Google Scholar
  2. Hockney, R. W. and Eastwood, J. W.: 1989,Computer Simulation Using Particles, IOP Publishing Ltd.Google Scholar

Copyright information

© Kluwer Academic Publishers 1992

Authors and Affiliations

  • W. Y. Chau
    • 1
  • S. S. Mak
    • 2
  • Y. W. Law
    • 1
  • K. L. Chan
    • 3
    • 4
  1. 1.Department of PhysicsUniversity of Hong KongHong Kong
  2. 2.Department of Applied PhysicsHong Kong PolytechnicHong Kong
  3. 3.Applied Research CorporationUSA
  4. 4.Yale UniversityNew HavenUSA

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