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SPH and Radiative Cooling

Published online by Cambridge University Press:  22 February 2018

K. J. Manson
K. J. Manson*
Affiliation:
Mathematical Sciences Institute, Australian National University, Canberra, Australia ([email protected])

Extract

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I have investigated the effects of including a more realistic cooling law in SPH simulations of accretion discs. In order to improve the efficiency of the simulations, I have used Strang operator splitting, and I have developed a method of timestep control which guarantees the accuracy and stability of the simulations.

Strang splitting (Strang, 1968) is used to numerically solve a differential equation where the differential operator is split into two or more parts. This scheme is appropriate for any such equation, but is applied most effectively in cases where one part of the equation has a different timescale to the rest, or is somehow more difficult to solve or less stable.

Type
The Contributed Papers
Information
International Astronomical Union Colloquium , Volume 194: Compact binaries in the galaxy and beyond , 2004 , pp. 229
Copyright
Copyright © Instituto de astronomia/revista mexicana de astronomίa y astrofίsica 2004

References

Manson, K. J., PhD Thesis , 2004 Google Scholar
Strang, G., SIAM J. Numer. Anal., 5, p. 506,1968 Google Scholar