Coupled MHD and transport analysis of improved confinement DIII-D discharges
- General Atomics, San Diego, CA (United States)
- Lawrence Livermore National Lab., CA (United States)
Transiently high internal inductance discharges are used to check the validity of evolvement of current profiles obtained with the MHD/transport coupled scheme presented below. Both a current ramp and an elongation ramp discharge are examined. To simulate energy confinement the Rebut-Lallia-Watkins model is used for the current ramp discharge. In our simulation of experimental discharges external circuit behavior is accounted for by using measured, time dependent, flux loops, magnetic probes, field shaping and ohmic coil currents. The small effect of eddy currents in the plasma vessel are neglected. We use measured, time dependent electron and ion temperature profiles, electron density, Z{sub eff}, toroidal rotation and radiated power profiles to constrain our analyses. For the RLW simulation measured values of T{sub e} and T{sub i} at the plasma edge are used as boundary conditions in the electron and ion energy equations.
- Research Organization:
- General Atomics, San Diego, CA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC03-89ER51114; W-7405-ENG-48
- OSTI ID:
- 10169651
- Report Number(s):
- GA-A-21309; CONF-930720-15; ON: DE93016985; TRN: 93:016666
- Resource Relation:
- Conference: 20. European conference on controlled fusion and plasma physics,Lisbon (Portugal),26-30 Jul 1993; Other Information: PBD: May 1993
- Country of Publication:
- United States
- Language:
- English
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