By Topic

Parameter estimation in a tokamak transport model and application to L- and H-mode simulations

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Qiang, J. ; Dept. of Nucl. Eng., Illinois Univ., Urbana, IL, USA ; Singer, C.E.

A systematic parameter estimation method has been established and applied to estimating a priori uncertain multipliers of flux formulas in a gyro-Bohm tokamak transport model. Results from simulating two tokamak discharge profiles with the model calibrated here are shown. The method used here can deal with limited and relatively uncertain experimental data by using estimates of prior knowledge concerning the accuracy of the data. Confidence regions are given to assess the accuracy of estimators. The estimated multipliers are much larger than in a similar study using a nongyro-Bohm transport model suggesting that mechanisms, in addition to early estimates of E×B driven fluxes from resistive ballooning and quasi-linear drift/ηi turbulence, are needed for a complete theoretical model of flux surface-averaged transport in tokamaks

Published in:

Plasma Science, IEEE Transactions on  (Volume:24 ,  Issue: 4 )