Zobrazeno 1 - 10
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pro vyhledávání: '"Dudt, Daniel"'
Autor:
Gaur, Rahul, Conlin, Rory, Dickinson, David, Parisi, Jason F., Dudt, Daniel, Panici, Dario, Kim, Patrick, Unalmis, Kaya, Dorland, William D., Kolemen, Egemen
To build an economically viable stellarator, it is essential to find a configuration that satisfies a set of favorable properties to achieve efficient steady-state nuclear fusion. One such property is omnigenity, which ensures confinement of trapped
Externí odkaz:
http://arxiv.org/abs/2410.04576
Zernike Polynomials serve as an orthogonal basis on the unit disc, and have been proven to be effective in optics simulations, astrophysics, and more recently in plasma simulations. Unlike Bessel functions, they maintain finite values at the disc cen
Externí odkaz:
http://arxiv.org/abs/2409.19156
Publikováno v:
J. Plasma Phys. 90 (2024) 905900501
In this work we consider the problem of optimizing a stellarator subject to hard constraints on the design variables and physics properties of the equilibrium. We survey current numerical methods for handling these constraints, and summarize a number
Externí odkaz:
http://arxiv.org/abs/2403.11033
Autor:
Kim, Patrick, Buller, Stefan, Conlin, Rory, Dorland, William, Dudt, Daniel W., Gaur, Rahul, Jorge, Rogerio, Kolemen, Egemen, Landreman, Matt, Mandell, Noah R., Panici, Dario
We present new stellarator equilibria that have been optimized for reduced turbulent transport using nonlinear gyrokinetic simulations within the optimization loop. The optimization routine involves coupling the pseudo-spectral GPU-native gyrokinetic
Externí odkaz:
http://arxiv.org/abs/2310.18842
Publikováno v:
Journal of Plasma Physics 90, no. 1 (2024): 905900120
Omnigenity is a desirable property of toroidal magnetic fields that ensures confinement of trapped particles. Confining charged particles is a basic requirement for any fusion power plant design, but it can be difficult to satisfy with the non-axisym
Externí odkaz:
http://arxiv.org/abs/2305.08026
3D equilibrium codes are vital for stellarator design and operation, and high-accuracy equilibria are also necessary for stability studies. This paper details comparisons of two three-dimensional equilibrium codes, VMEC, which uses a steepest-descent
Externí odkaz:
http://arxiv.org/abs/2203.17173
The DESC stellarator optimization code takes advantage of advanced numerical methods to search the full parameter space much faster than conventional tools. Only a single equilibrium solution is needed at each optimization step thanks to automatic di
Externí odkaz:
http://arxiv.org/abs/2204.00078
A new perturbation and continuation method is presented for computing and analyzing stellarator equilibria. The method is formally derived from a series expansion about the equilibrium condition $F \equiv J \times B - \nabla p = 0$, and an efficient
Externí odkaz:
http://arxiv.org/abs/2203.15927
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