Abstract
The effects of toroidal and poloidal flows on the equilibrium of tokamak plasmas are numerically investigated using the code FLOW. The code is used to determine the changes in the profiles induced by large toroidal flows on NSTX-like equilibria [with NSTX being the National Spherical Torus Experiment, M. Ono, S.M. Kaye, Y.-K.M. Peng et al., Nucl. Fusion 40, 557 (2000)] where flows exceeding the sound speed lead to a considerable outward shift of the plasma. The code is also used to study the effects of poloidal flow when the flow velocity profile varies from subsonic to supersonic with respect to the poloidal sound speed. It is found that pressure and density profiles develop a pedestal structure characterized by radial discontinuities at the transonic surface where the poloidal velocity abruptly jumps from subsonic to supersonic values. These results confirm the conclusions of the analytic theory of R. Betti and J. P. Freidberg [Phys. Plasmas 7, 2439 (2000)], derived for a low-{beta}, large aspect ratio tokamak with a circular cross section.
Guazzotto, L;
Betti, R;
Manickam, J;
Kaye, S;
[1]
Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543 (United States)]
- University of Rochester and Laboratory for Laser Energetics, Rochester, New York 14623 (United States)
Citation Formats
Guazzotto, L, Betti, R, Manickam, J, Kaye, S, and Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543 (United States)].
Numerical study of tokamak equilibria with arbitrary flow.
United States: N. p.,
2004.
Web.
doi:10.1063/1.1637918.
Guazzotto, L, Betti, R, Manickam, J, Kaye, S, & Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543 (United States)].
Numerical study of tokamak equilibria with arbitrary flow.
United States.
https://doi.org/10.1063/1.1637918
Guazzotto, L, Betti, R, Manickam, J, Kaye, S, and Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543 (United States)].
2004.
"Numerical study of tokamak equilibria with arbitrary flow."
United States.
https://doi.org/10.1063/1.1637918.
@misc{etde_20500545,
title = {Numerical study of tokamak equilibria with arbitrary flow}
author = {Guazzotto, L, Betti, R, Manickam, J, Kaye, S, and Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543 (United States)]}
abstractNote = {The effects of toroidal and poloidal flows on the equilibrium of tokamak plasmas are numerically investigated using the code FLOW. The code is used to determine the changes in the profiles induced by large toroidal flows on NSTX-like equilibria [with NSTX being the National Spherical Torus Experiment, M. Ono, S.M. Kaye, Y.-K.M. Peng et al., Nucl. Fusion 40, 557 (2000)] where flows exceeding the sound speed lead to a considerable outward shift of the plasma. The code is also used to study the effects of poloidal flow when the flow velocity profile varies from subsonic to supersonic with respect to the poloidal sound speed. It is found that pressure and density profiles develop a pedestal structure characterized by radial discontinuities at the transonic surface where the poloidal velocity abruptly jumps from subsonic to supersonic values. These results confirm the conclusions of the analytic theory of R. Betti and J. P. Freidberg [Phys. Plasmas 7, 2439 (2000)], derived for a low-{beta}, large aspect ratio tokamak with a circular cross section.}
doi = {10.1063/1.1637918}
journal = []
issue = {2}
volume = {11}
journal type = {AC}
place = {United States}
year = {2004}
month = {Feb}
}
title = {Numerical study of tokamak equilibria with arbitrary flow}
author = {Guazzotto, L, Betti, R, Manickam, J, Kaye, S, and Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543 (United States)]}
abstractNote = {The effects of toroidal and poloidal flows on the equilibrium of tokamak plasmas are numerically investigated using the code FLOW. The code is used to determine the changes in the profiles induced by large toroidal flows on NSTX-like equilibria [with NSTX being the National Spherical Torus Experiment, M. Ono, S.M. Kaye, Y.-K.M. Peng et al., Nucl. Fusion 40, 557 (2000)] where flows exceeding the sound speed lead to a considerable outward shift of the plasma. The code is also used to study the effects of poloidal flow when the flow velocity profile varies from subsonic to supersonic with respect to the poloidal sound speed. It is found that pressure and density profiles develop a pedestal structure characterized by radial discontinuities at the transonic surface where the poloidal velocity abruptly jumps from subsonic to supersonic values. These results confirm the conclusions of the analytic theory of R. Betti and J. P. Freidberg [Phys. Plasmas 7, 2439 (2000)], derived for a low-{beta}, large aspect ratio tokamak with a circular cross section.}
doi = {10.1063/1.1637918}
journal = []
issue = {2}
volume = {11}
journal type = {AC}
place = {United States}
year = {2004}
month = {Feb}
}