Difficulties and solutions for estimating transport by perturbative experiments

F. Sattin, D.F. Escande, F. Auriemma, G. Urso, D. Terranova

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The first part of this work reviews the algebraic matricial approach to transport data inversion. It works for the convection-diffusion transport equation used for periodic signals and provides a formally exact solution, as well as a quantitative assessment of error bars. The standard methods of reconstruction infer the diffusivity D and pinch V by matching experimental data against those simulated by transport codes. These methods do not warrant the validity of either the underlying models of transport, or of the reconstructed D(r) and V(r), even when the results look reasonable. However, the adoption of automated global search algorithms based upon genetic algorithms is bound to greatly increase the probability of finding optimal solutions.
Original languageEnglish
Article number114008
Pages (from-to)-
JournalPlasma Physics and Controlled Fusion
Volume56
Issue number11
DOIs
Publication statusPublished - 1 Nov 2014
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Nuclear Energy and Engineering
  • Condensed Matter Physics

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