Sandpiles and complexity in fusion, space, and astrophysical plasmas

Details Sandpiles and complexity in fusion, space, and astrophysical plasmas Sandpiles and complexity in fusion, space, and astrophysical plasmas

Nov 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aps..dpp.km202d&link_type=abstract

American Physical Society, 41st Annual Meeting of the Division of Plasma Physics, November 15-19, 1999 Seattle, WA, abstract #KM

Physics

Plasma Physics

Scientific paper

Sandpile modelling provides new insights into energy inflow, storage, transport and release in fusion, magnetospheric, and astrophysical plasmas. Greater realism, for example, strong or fluctuating loading, has been incorporated within sandpile models which are now widely applied. In parallel, the role of fundamental physics paradigms, notably fractality and self-organised criticality, is increasingly well understood. The as-yet- unexplained emergence, through self-organisation, of two distinct transport regimes for a simple sandpile model (Chapman et al, Phys Plasmas in press), is a significant recent discovery. Sandpile modelling is increasingly computer-intensive: for example, a minimum of five thousand cells was needed to provide the statistical resolution required to elucidate the consequences of an extremely simple algorithm.

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