Zobrazeno 1 - 10
of 41
pro vyhledávání: '"Antoine J. Cerfon"'
Publikováno v:
Journal of Plasma Physics. 87
In an early study of the properties and capabilities of the multiregion, relaxed magnetohydrodynamic model, Hole, Hudson & Dewar claim that they are able to construct a multiregion stepped pressure cylindrical equilibrium which does not require the e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3a200ad2a2c2b36a24bae638d6da0aa5
https://doi.org/10.1017/s0022377821000337
https://doi.org/10.1017/s0022377821000337
Publikováno v:
Plasma Phys Control Fusion
Models of magnetohydrodynamic (MHD) equilibia that for computational convenience assume the existence of a system of nested magnetic flux surfaces tend to exhibit singular current sheets. These sheets are located on resonant flux surfaces that are as
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0da87b5d51a3f5de31feb2796ad7728d
http://arxiv.org/abs/1911.01856
http://arxiv.org/abs/1911.01856
We present a boundary integral equation solver for computing Taylor relaxed states in non-axisymmetric solid and shell-like toroidal geometries. The computation of Taylor states in these geometries is a key element for the calculation of stepped pres
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bc98e19db286cd27bb4130d36b55e3ed
http://arxiv.org/abs/1902.01205
http://arxiv.org/abs/1902.01205
We propose a high-order adaptive numerical solver for the semilinear elliptic boundary value problem modeling magnetic plasma equilibrium in axisymmetric confinement devices. In the fixed boundary case, the equation is posed on curved domains with pi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4d4016d0ed9af90c2c9ea9f588f93a11
Several problems in magnetically confined fusion, such as the computation of exterior vacuum fields or the decomposition of the total magnetic field into separate contributions from the plasma and the external sources, are best formulated in terms of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fcb80f614b3a2fa281babc08204ea6ba
Publikováno v:
Nuclear Fusion. 61:045001
We have carried out a detailed analysis that compares steady state versus pulsed tokamak reactors. The motivations are as follows. Steady state current drive has turned out to be more difficult than expected - it takes too many watts to drive an Ampe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4e142ebc65b64131358cc6f6c4f7d055
https://doi.org/10.1088/1741-4326/abe0d2
https://doi.org/10.1088/1741-4326/abe0d2
Publikováno v:
Journal of Computational Physics. 305:744-757
We present a numerical scheme that can be combined with any fixed boundary finite element based Poisson or Grad-Shafranov solver to compute the first and second partial derivatives of the solution to these equations with the same order of convergence
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b5a38b43474e8f402dbb858683e7d695
https://doi.org/10.1016/j.jcp.2015.11.015
https://doi.org/10.1016/j.jcp.2015.11.015
Publikováno v:
Physics of Plasmas. 27:102304
We show that the recently introduced two-field flux-balanced Hasegawa-Wakatani (BHW) model captures the key features of drift-wave turbulent transport mediated by zonal flows observed in more complete and accurate gyrokinetic simulations, such as the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a34c5a5fd19ad1e9073dffe02da2dae7
https://doi.org/10.1063/5.0018943
https://doi.org/10.1063/5.0018943
We investigate the drift wave -- zonal flow dynamics in a shearless slab geometry with the new flux-balanced Hasegawa-Wakatani model. As in previous Hasegawa-Wakatani models, we observe a sharp transition from a turbulence dominated regime to a zonal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bb66b5db1029dd2c22b65fdddb7d669c
http://arxiv.org/abs/1812.00131
http://arxiv.org/abs/1812.00131
We propose a new reduced fluid model for the study of the drift wave -- zonal flow dynamics in magnetically confined plasmas. Our model can be viewed as an extension of the classic Hasegawa-Wakatani (HW) model, and is based on an improved treatment o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::14ec7b7ca3b20fdf655e71c21ba4d87c
http://arxiv.org/abs/1807.08054
http://arxiv.org/abs/1807.08054