Turbulent-convective block for the ASTRA transport code
- Authors: Dnestrovskij A.Y.1, Pastukhov V.P.1, Chudin N.V.1
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Affiliations:
- National Research Center Kurchatov Institute
- Issue: Vol 43, No 4 (2017)
- Pages: 405-421
- Section: Tokamaks
- URL: https://journals.rcsi.science/1063-780X/article/view/186561
- DOI: https://doi.org/10.1134/S1063780X1704002X
- ID: 186561
Cite item
Abstract
A physical model for the enhanced transport code is presented, which explicitly takes into account the contribution of turbulent convection to the processes of particle and heat transport in the hot core of the tokamak plasma. The model is based on the specially developed CONTRA-A turbulent block, while an adapted version of the existing ASTRA transport code is used as a transport envelope. The CONTRA-A turbulent block, based on the adiabatically reduced quasi-2D magnetohydrodynamic equations, calculates the generation and self-consistent evolution of low-frequency turbulence, including the spatiotemporal structure of turbulent fluctuations of the plasma velocity, density, and temperatures of electrons and ions. Using the obtained data on fluctuations, the CONTRA-A block calculates the turbulent-convective particle and heat fluxes and transfers them to the modified ASTRA code, which computes the evolution of quasi-equilibrium plasma parameters. To illustrate the capabilities of the enhanced transport model, the results of simulations of turbulent plasma evolution in two discharge scenarios with nonstationary auxiliary plasma heating in the T-10 and T-15MD tokamaks are presented.
About the authors
A. Yu. Dnestrovskij
National Research Center Kurchatov Institute
Email: Pastukhov_VP@nrcki.ru
Russian Federation, Moscow, 123182
V. P. Pastukhov
National Research Center Kurchatov Institute
Author for correspondence.
Email: Pastukhov_VP@nrcki.ru
Russian Federation, Moscow, 123182
N. V. Chudin
National Research Center Kurchatov Institute
Email: Pastukhov_VP@nrcki.ru
Russian Federation, Moscow, 123182