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Abstract

Global and local energy transport analysis of experimental results in TFTR and JET indicates that transport models of the Bohm type allow a better representation of experimental data than models of the gyro-Bohm type. Hence a Bohm-like model has been developed by allowing a dependence on a few dimensionless parameters so as to reproduce the main features of global L-mode thermal confinement scaling laws in tokamaks and to obtain bowl-shaped thermal diffusivity profiles. The electron temperature profiles predicted by this model are shown to be in agreement with measured ones in a variety of steady state and time dependent JET L-mode discharges.

Additional information

Authors: TARONI A, JET Joint Undertaking, Abingdon, Oxon. (GB);ERBA M, JET Joint Undertaking, Abingdon, Oxon. (GB);SPRINGMANN E, JET Joint Undertaking, Abingdon, Oxon. (GB);TIBONE F, JET Joint Undertaking, Abingdon, Oxon. (GB)
Bibliographic Reference: Report: JET-P(93)84 EN (1993)
Availability: Available from the Publications Officer, JET Joint Undertaking, Abingdon, Oxon. OX14 3EA (GB)
Record Number: 199311631 / Last updated on: 1994-11-28
Category: PUBLICATION
Original language: en
Available languages: en
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