Numerical solution of transport equations for plasmas with transport barriers
An approach to solve numerically transport equations for plasmas with spontaneously arising and arbitrarily located transport barriers, regions with a strongly reduced transfer of energy, is proposed. The transport equations are written in a form conserving heat flux and solved numerically by using...
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| Veröffentlicht in: | Computer physics communications 2006-07, Vol.175 (1), p.30-35 |
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| container_title | Computer physics communications |
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| creator | Tokar, Mikhail Z. Kalupin, Denis Pilipenko, Denis |
| description | An approach to solve numerically transport equations for plasmas with spontaneously arising and arbitrarily located transport barriers, regions with a strongly reduced transfer of energy, is proposed. The transport equations are written in a form conserving heat flux and solved numerically by using piecewisely exact analytical solutions of linear differential equations. Compared to standard methods, this approach allows to reduce significantly the number of operations required to obtain a converged solution with a heat conductivity changing abruptly at a critical temperature gradient and to use large time steps in modeling the formation and dynamics of transport barriers. Computations for the tokamak JET are done. |
| doi_str_mv | 10.1016/j.cpc.2006.02.010 |
| format | Article |
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| ispartof | Computer physics communications, 2006-07, Vol.175 (1), p.30-35 |
| issn | 0010-4655 1879-2944 1386-9485 |
| language | eng |
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| source | Elsevier ScienceDirect Journals Complete |
| subjects | Numerical methods Plasma Transport barriers Transport equations |
| title | Numerical solution of transport equations for plasmas with transport barriers |
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