Zobrazeno 1 - 10
of 43
pro vyhledávání: '"J. L. V. Lewandowski"'
Publikováno v:
Journal of Computational Physics. 214:657-671
A new finite element Poisson solver is developed and applied to a global gyrokinetic toroidal code (GTC) which employs the field aligned mesh and thus a logically non-rectangular grid in a general geometry. Employing test cases where the analytical s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::10065eb83c83780d03fbb13df0ed15b1
https://doi.org/10.1016/j.jcp.2005.10.011
https://doi.org/10.1016/j.jcp.2005.10.011
Autor:
Stephane Ethier, Yasutaro Nishimura, W. X. Wang, Zhihong Lin, J. L. V. Lewandowski, G. Rewoldt, W. W. Lee, T.S. Hahm
Publikováno v:
Journal of Physics: Conference Series. 16:16-24
Recent progress in gyrokinetic particle-in-cell simulations of turbulent plasmas using the gyrokinetic toroidal code (GTC) is surveyed. In particular, recent results for electron temperature gradient (ETG) modes and their resulting transport are pres
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::230da6b578ba5bf1820bf64fbce305f9
https://doi.org/10.1088/1742-6596/16/1/002
https://doi.org/10.1088/1742-6596/16/1/002
Autor:
Zhihong Lin, J. Manickam, J. L. V. Lewandowski, G. Rewoldt, William Tang, W. W. Lee, W. X. Wang, Stephane Ethier, T.S. Hahm
Publikováno v:
Journal of Physics: Conference Series. 16:59-64
A general geometry model has been developed for the gyrokinetic toroidal code GTC with a number of highly desirable features including a systematic treatment of plasma rotation and equilibrium E × B flow, realistic plasma profiles and corresponding
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::462570e794761c58566461b8020dbf45
https://doi.org/10.1088/1742-6596/16/1/008
https://doi.org/10.1088/1742-6596/16/1/008
Autor:
J. L. V. Lewandowski
Publikováno v:
Journal of Scientific Computing. 21:173-192
A new scheme, based on an exact separation between adiabatic and nonadiabatic electron responses, for particle-in-cell (PIC) simulations of drift-type modes is presented. The (linear and nonlinear) elliptic equations for the scalar fields are solved
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e505ccf906357c3a33d0f0db4bb5dadc
https://doi.org/10.1023/b:jomp.0000030074.13977.45
https://doi.org/10.1023/b:jomp.0000030074.13977.45
Autor:
J. L. V. Lewandowski
Publikováno v:
Journal of the Physical Society of Japan. 73:898-906
A computational study of resistive drift waves in the edge plasma of a bumpy torus is presented. The magnetohydrodynamic equilibrium is obtained from a three-dimensional local equilibrium model. The use of a local magnetohydrodynamic equilibrium mode
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::25250c48e009f0df2214cde67d7ee211
https://doi.org/10.1143/jpsj.73.898
https://doi.org/10.1143/jpsj.73.898
Autor:
J. L. V. Lewandowski
Publikováno v:
Physics of Plasmas. 10:4053-4063
A computational study of microinstabilities in general geometry is presented. The ion gyrokinetic is solved as an initial value problem. The advantage of this approach is the accurate treatment of some important kinetic effects. The magnetohydrodynam
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2e5daa3ba4260d210b18f47dd9f6215a
https://doi.org/10.1063/1.1609987
https://doi.org/10.1063/1.1609987
Autor:
J. L. V. Lewandowski
Publikováno v:
Physics of Plasmas. 10:3204-3211
A new scheme to accurately retain kinetic electron effects in particle-in-cell (PIC) simulations for the case of electrostatic drift waves is presented. The splitting scheme, which is based on exact separation between adiabatic and nonadiabatic elect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8f51184214bab0a15d98d44b5df3d96a
https://doi.org/10.1063/1.1591186
https://doi.org/10.1063/1.1591186
Autor:
E. A. Lazarus, W. Reiersen, B.E. Nelson, R. Hatcher, M. Isaev, Donald A. Spong, J. F. Lyon, C. Nuehrenberg, D. R. Mikkelsen, J. Schmidt, Raul Sanchez, Robert James Goldston, Stuart R. Hudson, S. Hirshman, W. A. Cooper, A. H. Reiman, Dennis J Strickler, Charles Kessel, Neil Pomphrey, Roscoe White, L. P. Ku, M. H. Redi, G. H. Neilson, Guoyong Fu, Allen H. Boozer, P. H. Rutherford, M. C. Zarnstorff, Eric Fredrickson, A. Brooks, H.E. Mynick, J. L. V. Lewandowski, D. A. Monticello, Lee A. Berry, P. Merkel
Publikováno v:
Plasma Physics and Controlled Fusion. 43:A237-A249
Compact optimized stellarators offer novel solutions for confining high-beta plasmas and developing magnetic confinement fusion. The three-dimensional plasma shape can be designed to enhance the magnetohydrodynamic (MHD) stability without feedback or
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::56f49bc58e137575ec129d2c1797360c
https://doi.org/10.1088/0741-3335/43/12a/318
https://doi.org/10.1088/0741-3335/43/12a/318
Publikováno v:
Physics of Plasmas. 8:4435-4440
It is found that the thermal fluctuation level of the shear-Alfven waves in a gyrokinetic plasma is dependent on plasma β(≡cs2/vA2), where cs is the ion acoustic speed and vA is the Alfven velocity. This unique thermodynamic property based on the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6bb54ea274ad9f24d53434c4bd41e226
https://doi.org/10.1063/1.1400124
https://doi.org/10.1063/1.1400124
Publikováno v:
Physics of Plasmas. 8:2849-2854
A novel method to calculate the neoclassical radial electric field in stellarator plasmas is described. The method, which does not have the inconvenience of large statistical fluctuations (noise) of the standard Monte Carlo technique, is based on the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fa6ad92584e2b0a8926c9dbcb9dd9487
https://doi.org/10.1063/1.1370363
https://doi.org/10.1063/1.1370363