Počet záznamů: 1  

A Finite Element Versus Analytical Approach to the Solution of the Current Diffusion Equation in Tokamaks

  1. 1.
    0489526 - UFP-V 2019 RIV US eng J - Článek v odborném periodiku
    Šesnic, S. - Dorić, V. - Poljak, D. - Šušnjara, A. - Artaud, J.F. - Urban, Jakub
    A Finite Element Versus Analytical Approach to the Solution of the Current Diffusion Equation in Tokamaks.
    IEEE Transactions on Plasma Science. Roč. 46, č. 4 (2018), s. 1027-1034. ISSN 0093-3813
    Grant CEP: GA MŠk(CZ) 8D15001
    GRANT EU: European Commission(XE) 633053 - EUROfusion
    Institucionální podpora: RVO:61389021
    Klíčová slova: Finite element analysis * Tokamaks * current diffusion equation (CDE) * finite-element method (FEM)
    Kód oboru RIV: BL - Fyzika plazmatu a výboje v plynech
    Obor OECD: Fluids and plasma physics (including surface physics)
    Impakt faktor: 1.325, rok: 2018

    This paper deals with two efficient approaches for solving the current diffusion equation (CDE), which governs current diffusion through the conductive plasma inside a tokamak and compares them to CRONOS tokamak simulation suite, as well. Namely, CDE is solved via the finite-element method (FEM) and an analytical technique, respectively, and the obtained results are subsequently compared with the solution obtained from the state-of-the-art CRONOS suite with finite-difference calculations. The tradeoff between different approaches has been undertaken. The results obtained via the FEM approach (with Hermite basis function, in particular) show very good agreement with the CRONOS results, while also providing the stability of the solution. On the other hand, the results obtained via the analytical solution clearly demonstrate a good agreement with the numerical results in the edge region, which makes it very useful for various applications.
    Trvalý link: http://hdl.handle.net/11104/0284002