Computational methods in tokamak transport
A variety of numerical methods for solving the time-dependent fluid transport equations for tokamak plasmas is presented. Among the problems discussed are techniques for solving the sometimes very stiff parabolic equations for particle and energy flow, treating convection-dominated energy transport that leads to large cell Reynolds numbers, optimizing the flow of a code to reduce the time spent updating the particle and energy source terms, coupling the one-dimensional (1-D) flux-surface-averaged fluid transport equations to solutions of the 2-D Grad-Shafranov equation for the plasma geometry, handling extremely fast transient problems such as internal MHD disruptions and pellet injection, and processing the output to summarize the physics parameters over the potential operating regime for reactors. Emphasis is placed on computational efficiency in both computer time and storage requirements.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- DOE Contract Number:
- W-7405-ENG-26
- OSTI ID:
- 6925780
- Report Number(s):
- ORNL/TM-8193; ON: DE82016616
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
TOKAMAK DEVICES
TRANSPORT THEORY
ANALYTICAL SOLUTION
COMPUTER CALCULATIONS
FUEL PELLETS
ONE-DIMENSIONAL CALCULATIONS
REACTOR FUELING
TIME DEPENDENCE
CLOSED PLASMA DEVICES
PELLETS
THERMONUCLEAR DEVICES
700105* - Fusion Energy- Plasma Research- Plasma Kinetics-Theoretical- (-1987)