Skip to main content
Log in

On a nonlocal problem for a confined plasma in a Tokamak

  • Published:
Applications of Mathematics Aims and scope Submit manuscript

Abstract

The paper deals with a nonlocal problem related to the equilibrium of a confined plasma in a Tokamak machine. This problem involves terms u* (|u > u(x)|) and |u > u(x)|, which are neither local, nor continuous, nor monotone. By using the Galerkin approximate method and establishing some properties of the decreasing rearrangement, we prove the existence of solutions to such problem.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Similar content being viewed by others

References

  1. F. J. Almgren Jr., E.H. Lieb: Symmetric decreasing rearrangement is sometimes continuous. J. Am. Math. Soc. 2 (1989), 683–773

    Article  MATH  MathSciNet  Google Scholar 

  2. H. Berestycki, H. Brézis: On a free boundary problem arising in plasma physics. Nonlinear Anal., Theory Methods Appl. 4 (1980), 415–436.

    Article  MATH  Google Scholar 

  3. J. Blum: Numerical Simulation and Optimal Control in Plasma Physics. With Applications to Tokamaks. Wiley/Gauthier-Villars Series in Modern Applied Mathematics. Wiley, Chichester, 1989.

    Google Scholar 

  4. L. Boccardo, S. Segura de León, C. Trombetti: Bounded and unbounded solutions for a class of quasi-linear elliptic problems with a quadratic gradient term. J. Math. Pures Appl. 80 (2001), 919–940.

    Article  MATH  MathSciNet  Google Scholar 

  5. R. Courant, D. Hilbert: Methods of Mathematical Physics Vol. I. Translated and revised from the German original. First English ed. Interscience Publishers, New York, 1953.

    Google Scholar 

  6. J. I. Díaz, G. Galiano, J. F. Padial: On the uniqueness of solutions of a nonlinear elliptic problem arising in the confinement of a plasma in a stellarator device. Appl. Math. Optimization 39 (1999), 61–73.

    Article  MATH  Google Scholar 

  7. J. I. Díaz, M. B. Lerena, J. F. Padial, J. M. Rakotoson: An elliptic-parabolic equation with a nonlocal term for the transient regime of a plasma in a stellarator. J. Differ. Equations 198 (2004), 321–355.

    Article  MATH  Google Scholar 

  8. J. I. Díaz, J. F. Padial, J. M. Rakotoson: Mathematical treatment of the magnetic confinement in a current carrying stellarator. Nonlinear Anal., Theory Methods Appl. 34 (1998), 857–887.

    Article  MATH  Google Scholar 

  9. J. I. Díaz, J. M. Rakotoson: On a nonlocal stationary free-boundary problem arising in the confinement of a plasma in a stellarator geometry. Arch. Ration. Mech. Anal. 134 (1996), 53–95.

    Article  MATH  Google Scholar 

  10. A. Ferone, M. Jalal, J. M. Rakotoson, R. Volpicelli: A topological approach for generalized nonlocal models for a confined plasma in a tokamak. Commun. Appl. Anal. 5 (2001), 159–181.

    MATH  MathSciNet  Google Scholar 

  11. A. Ferone, M. Jalal, J. M. Rakotoson, R. Volpicelli: Nonlocal generalized models for a confined plasma in a tokamak. Appl. Math. Lett. 12 (1999), 43–46.

    Article  MATH  MathSciNet  Google Scholar 

  12. A. Fiorenza, J. M. Rakotoson, L. Zitouni: Relative rearrangement method for estimating dual norms. Indiana Univ. Math. J. 58 (2009), 1127–1150.

    Article  MATH  MathSciNet  Google Scholar 

  13. H. Gourgeon, J. Mossino: Sur un problème à frontière libre de la physique des plasmas. Ann. Inst. Fourier 29 (1979), 127–141. (In French.)

    Article  MATH  MathSciNet  Google Scholar 

  14. H. Grad, P. N. Hu, D. C. Stevens: Adiabatic evolution of plasma equilibrium. Proc. Nat. Acad. Sci. USA 72 (1975), 3789–3793.

    Article  Google Scholar 

  15. A. Henrot: Extremum Problems for Eigenvalues of Elliptic Operators. Frontiers in Mathematics. Birkhäuser, Basel, 2006.

    Google Scholar 

  16. E. H. Lieb, M. Loss: Analysis. 2nd ed. Graduate Studies in Mathematics 14. American Mathematical Society, Providence, 2001.

    MATH  Google Scholar 

  17. C. Mercier: The Magnetohydrodynamic Approach to the Problem of a Plasma Confinement in Closed Magnetic Configurations. EURATOM-CEA, Comm. of the European Communities, Luxembourg, 1974.

    Google Scholar 

  18. J. Mossino: A priori estimates for a model of Grad-Mercier type in plasma confinement. Appl. Anal. 13 (1982), 185–207.

    Article  MATH  MathSciNet  Google Scholar 

  19. J. Mossino: Application des inéquations quasi-variationnelles à quelques problèmes non linéaires de la physique des plasmas. Isr. J. Math. 30 (1978), 14–50. (In French.)

    Article  MATH  MathSciNet  Google Scholar 

  20. J. Mossino: Inégalités isopérimétriques et applications en physique. Travaux en Cours. Hermann, Paris, 1984. (In French.)

    Google Scholar 

  21. J. Mossino: Some nonlinear problems involving a free boundary in plasma physics. J. Differ. Equations 34 (1979), 114–138.

    Article  MATH  MathSciNet  Google Scholar 

  22. J. Mossino, R. Temam: Directional derivative of the increasing rearrangement mapping and application to a queer differential equation in plasma physics. Duke Math. J. 48 (1981), 475–495.

    Article  MATH  MathSciNet  Google Scholar 

  23. J. Mossino, R. Temam: Free boundary problems in plasma physics: review of results and new developments}. Free Boundary Problems, Theory and Applications Vol. II. Proc. interdisc. Symp., Montecatini/Italy 1981, Res. Notes Math. 79 (A. Fasano, eds.). Pitman, 1983, pp. 672–681.

    Google Scholar 

  24. J. M. Rakotoson: Existence of bounded solutions of some degenerate quasilinear elliptic equations. Commun. Partial Differ. Equations 12 (1987), 633–676.

    Article  MATH  MathSciNet  Google Scholar 

  25. J. M. Rakotoson: Galerkin approximation, strong continuity of the relative rearrangement map and application to plasma physics equations. Differ. Integral Equ. 12 (1999), 67–81.

    MATH  MathSciNet  Google Scholar 

  26. J. M. Rakotoson: Multivalued fixed point index and nonlocal problems involving relative rearrangement. Nonlinear Anal., Theory Methods Appl. 66 (2007), 2470–2499.

    Article  MATH  MathSciNet  Google Scholar 

  27. J.M. Rakotoson: Relative Rearrangement. An Estimation Tool for Boundary Problems. (Réarrangement relatif. Un instrument d’estimations dans les problèmes aux limites). Mathématiques & Applications 64, Springer, Berlin, 2008. (In French).

    Google Scholar 

  28. J.M. Rakotoson: Relative rearrangement for highly nonlinear equations. Nonlinear Anal., Theory Methods Appl. 24 (1995), 493–507.

    Article  MATH  MathSciNet  Google Scholar 

  29. J.M. Rakotoson: Un modèle non local en physique des plasmas: résolution par une méthode de degré topologique. (A nonlocal model in plasma physics: solution by the method of topological degree). Acta Appl. Math. 4 (1985), 1–14. (In French.)

    Article  MATH  MathSciNet  Google Scholar 

  30. J.M. Rakotoson, M. L. Seoane: Numerical approximations of the relative rearrangement: the piecewise linear case. Application to some nonlocal problems. M2AN, Math. Model. Numer. Anal. 34 (2000), 477–499.

    Article  MATH  MathSciNet  Google Scholar 

  31. J.M. Rakotoson, R. Temam: A co-area formula with applications to monotone rearrangement and to regularity. Arch. Ration. Mech. Anal. 109 (1990), 213–238.

    Article  MATH  MathSciNet  Google Scholar 

  32. G. Stampacchia: Le problème de Dirichlet pour les équations elliptiques du second ordre à coefficients discontinus. Ann. Inst. Fourier 15 (1965), 189–257. (In French.)

    Article  MATH  MathSciNet  Google Scholar 

  33. R. Temam: A non-linear eigenvalue problem: the shape at equilibrium of a confined plasma. Arch. Ration. Mech. Anal. 60 (1975), 51–73.

    Article  MATH  MathSciNet  Google Scholar 

  34. R. Temam: Monotone rearrangement of a function and the Grad-Mercier equation of plasma physics. Recent methods in non-linear analysis, Proc. Int. Meet., Rome 1978. Pitagora, Bologna, 1979, pp. 83–98.

    Google Scholar 

  35. R. Temam: Remarks on a free boundary value problem arising in plasma physics. Commun. Partial Differ. Equations 2 (1977), 563–585.

    Article  MATH  MathSciNet  Google Scholar 

  36. C. Trombetti: Non-uniformly elliptic equations with natural growth in the gradient. Potential Anal. 18 (2003), 391–404.

    Article  MATH  MathSciNet  Google Scholar 

  37. W. Zou, F. Li, B. Lv: On a nonlocal elliptic problem arising in the confinement of a plasma in a current carrying stellarator. Mathematical Methods in the Applied Sciences 36 (2013), 2128–2144.

    Article  MATH  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Weilin Zou.

Additional information

This work is supported by Natural Science Foundation of Jiangxi (No. 20132BAB211006), NSFC (No. 10401009) and NCET (No. 060275) of China.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Zou, W., Li, F. & Lv, B. On a nonlocal problem for a confined plasma in a Tokamak. Appl Math 58, 609–642 (2013). https://doi.org/10.1007/s10492-013-0031-5

Download citation

  • Received:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10492-013-0031-5

Keywords

MSC 2010

Navigation