The European Physical Journal D

, 66:283

Enhanced heat conductivity in stochastic magnetic field of tokomak affected by the ratio of the parallel to the perpendicular heat diffusivity

Regular Article
  • 105 Downloads

Abstract

Electron heat transport across stochastic magnetic fields is studied numerically in order to find out how the ratio of the parallel to the perpendicular heat diffusivity affects the enhanced heat conductivity and its radial profile in tokomak plasma physics. To find out the details of profile, non-local stochastic magnetic fields, in which the perturbed magnetic islands are separated with each other but very close to in the minor radius of tokomak, are chosen as research objects in our simulation work. Our numerical results indicate that the ratio of the parallel to the perpendicular heat diffusivity is a very important effective factor, which dominate how far the enhanced conductivity contributed by a perturbed magnetic field approach to zero from the rational surface in minor radius. Besides that, a theoretical analysis was provided and compared with the numerical results in this article.

Keywords

Plasma Physics 

References

  1. 1.
    J.A. Wesson, R.D. Gill, M. Hugon, F.C. Schuller, J.A. Snipes, D.J. Ward, D.V. Bartlett, D.J. Campbell, P.A. Duperrex, A.W. Edwards, R.S. Granetz, N.A.O. Gottardi, T.C. Hender, E. Lazzaro, P.J. Lomas, N. Lopes Cardozo, K.F. Mast, M.F.F. Nave, N.A. Salmon, P. Smeulders, P.R. Thomas, B.J.D. Tubbings, M.F. Turner, A. Weller, Nucl. Fus. 29, 641 (1989)CrossRefGoogle Scholar
  2. 2.
    Z. Chang, J.D. Callen, E.D. Fredrickson, R.V. Budny, K.M. McGuire, M.C. Zarnstorff, TFTR Group, Phys. Rev. Lett. 74, 4663 (1995) ADSCrossRefGoogle Scholar
  3. 3.
    S. Günter, A. Gude, M. Marascheket, S. Sesnic, H. Zohm, ASDEX Upgrade Team, D.F. Howell, Phys. Rev. Lett. 87, 275001 (2001) CrossRefGoogle Scholar
  4. 4.
    Q. Yu, Nucl. Fus. 40, 2031 (2001) ADSCrossRefGoogle Scholar
  5. 5.
    Q. Yu, S. Günter, B.D. Scott, Phys. Plasmas 10, 797 (2003)ADSCrossRefGoogle Scholar
  6. 6.
    R.C. Wolf, W. Biel, M.F.M. de Bock, K.H. Finken, S. Günter, G.M.D. Hogeweij, S. Jachmich, M.W. Jakubowski, R.J.E. Jaspers, A. Krämer-Flecken, H.R. Koslowski, M. Lehnen, Y. Liang, B. Unterberg, S.K. Varshney, M. von Hellermann, Q. Yu, O. Zimmermann, S.S. Abdullaev, A.J.H. Donné, U. Samm, B. Schweer, M. Tokar, E. Westerhof, the TEXTOR Team, Nucl. Fus. 45, 1700 (2005) ADSCrossRefGoogle Scholar
  7. 7.
    T.E. Evans, R.A. Moyer, P.R. Thomas, J.G. Watkins, T.H. Osborne, J.A. Boedo, E.J. Doyle, M.E. Fenstermacher, K.H. Finken, R.J. Groebner, M. Groth, J.H. Harris, R.J. La Haye, C.J. Lasnier, S. Masuzaki, N. Ohyabu, D.G. Pretty, T.L. Rhodes, H. Reimerdes, D.L. Rudakov, M.J. Schaffer, G. Wang, L. Zeng, Phys. Rev. Lett. 92, 235003 (2004) ADSCrossRefGoogle Scholar
  8. 8.
    E. Strumberger, J. Nucl. Mater. 266–269, 1207 (1999) CrossRefGoogle Scholar
  9. 9.
    P. Ghendrih, A. Grosman, H. Capes, Plasma Phys. Control. Fusion 38, 1653 (1996) ADSCrossRefGoogle Scholar
  10. 10.
    H. Zohm, G. Gantenbein, A. Gude, S. Günter, F. Leuterer, M. Maraschek, J.P. Meskat, W. Suttrop, Q. Yu, ASDEX Upgrade Team, ECRH Group (AUG), Nucl. Fus. 41, 197 (2001)ADSCrossRefGoogle Scholar
  11. 11.
    A.B. Rechester, M.N. Rosenbluth, Phys. Rev. Lett. 40, 38 (1978)ADSCrossRefGoogle Scholar
  12. 12.
    Q. Yu, Phys. Plasmas 13, 062310 (2006) ADSCrossRefGoogle Scholar
  13. 13.
    Q. Yu, Nucl. Fus. 47, 1244 (2007) ADSCrossRefGoogle Scholar
  14. 14.
    S. Günter, Q. Yu, J. Krüger, K. Lackner, J. Comput. Phys. 209, 35 (2005)CrossRefGoogle Scholar
  15. 15.
    H. Gao, Q. Yu, Chin. Phys. Lett. 26, 065201 (2009) ADSCrossRefGoogle Scholar
  16. 16.
    H. Gao, Plasma Sci. Tech. 11, 657 (2009)ADSCrossRefGoogle Scholar
  17. 17.
    M. Hölzl, S. Günter, Q. Yu, K. Lackner, Phys. Plasmas 14, 052501 (2007) ADSCrossRefGoogle Scholar
  18. 18.
    H. Gao, X. Zha, Contrib. Plasma Phys. 50, 135 (2010)ADSCrossRefGoogle Scholar
  19. 19.
    H. Gao, L. Yao, H. Zhong, W. Liu, K. Yang, Y. Shao, W. Xia, Q. Li, J. Fusion Energy 30, 195 (2011)CrossRefGoogle Scholar
  20. 20.
    H. Gao, J. Fusion Energy (2012), DOI: 10.1007/s10894-012-9551-3
  21. 21.
    T.E. Evans, R.K.W. Roeder, J.A. Carter, B.I. Rapoport, M.E. Fenstermacher, C.J. Lasnier, J. Phys.: Conf. Ser. 7, 174 (2005)ADSCrossRefGoogle Scholar
  22. 22.
    T.E. Evans, R.K.W. Roeder, J.A. Carter, B.I. Rapoport, Contrib. Plasma Phys. 44, 235 (2004)ADSCrossRefGoogle Scholar
  23. 23.
    R.K.W. Roeder, B.I. Rapoport, T.E. Evans, Phys. Plasmas 10, 3796 (2003) MathSciNetADSCrossRefGoogle Scholar

Copyright information

© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  1. 1.Department of PhysicsDalian Maritime UniversityDalianP.R. China

Personalised recommendations