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Abstract

High resolution numerical simulations of plasma turbulence driven by ion temperature gradients in the presence of magnetic field inhomogeneities have been performed, paying special attention to the behaviour of the anomalous ion energy flux. The pressure gradient evolution is treated consistently with energy transport, allowing the study of the saturated state in situations of relevance to tokamak plasmas. It is found that the presence of large scale coherent structures significantly affects the turbulent losses, leading to a reduction of the flux with respect to mixing length estimates.

Additional information

Authors: OTTAVIANI M, ENEA, Centro Ricerche Energia Frascati, Roma (IT);ROMANELLI F, ENEA, Centro Ricerche Energia Frascati, Roma (IT);BENZI R, University of Rome II (IT);BRISCOLINI M, IBM/ECSEC, European Center for Scientific and Engineering Computing;SANTANGELO P, IBM/ECSEC, European Center for Scientific and Engineering Computing;SUCCI S, IBM/ECSEC, European Center for Scientific and Engineering Computing
Bibliographic Reference: Report: RT/FUS/88/29 EN (1989)
Availability: Available from Servizio Studi e Documentazione - ENEA, Centro Ricerche Energia Frascati, C.P. 65 - 00044 Frascati, Roma (IT)
Record Number: 199010108 / Last updated on: 1994-12-01
Category: PUBLICATION
Original language: en
Available languages: en