Zobrazeno 1 - 10
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pro vyhledávání: '"Omotani, John"'
A new open source tool for fluid simulation of multi-component plasmas is presented, based on a flexible software design that is applicable to scientific simulations in a wide range of fields. This design enables the same code to be configured at run
Externí odkaz:
http://arxiv.org/abs/2303.12131
Intermittent fluctuations in the boundary of magnetically confined plasmas are investigated by numerical turbulence simulations of a reduced fluid model describing the evolution of the plasma density and electric drift vorticity in the two-dimensiona
Externí odkaz:
http://arxiv.org/abs/2102.04723
Publikováno v:
In Computer Physics Communications March 2024 296
Autor:
Decristoforo, Gregor, Militello, Fulvio, Garcia, Odd Erik, Nicholas, Thomas, Omotani, John, Marsden, Chris, Walkden, Nick
Interaction of coherent structures known as blobs in the scrape-off layer of magnetic confinement fusion devices is investigated. Isolated and interacting seeded blobs as well as full plasma turbulence are studied with a two dimensional fluid code. T
Externí odkaz:
http://arxiv.org/abs/2007.04260
Autor:
Brodrick, Jonathan Peter, Kingham, Robert J., Marinak, Michael M., Patel, Mehul V., Chankin, Alex V., Omotani, John, Umansky, Maxim, Del Sorbo, Dario, Dudson, Ben, Parker, Joseph Thomas, Kerbel, Gary D., Sherlock, Mark, Ridgers, Christopher P
Publikováno v:
Brodrick et al., Physics of Plasmas 24, 092309 (2017)
Three models for nonlocal electron thermal transport are here compared against Vlasov-Fokker-Planck (VFP) codes to assess their accuracy in situations relevant to both inertial fusion hohlraums and tokamak scrape-off layers. The models tested are (i)
Externí odkaz:
http://arxiv.org/abs/1704.08963
In tokamak transport barriers, the radial scale of profile variations can be comparable to a typical ion orbit width, which makes the coupling of the distribution function across flux surfaces important in the collisional dynamics. We use the radiall
Externí odkaz:
http://arxiv.org/abs/1611.08275
Neutral atoms can strongly influence the intrinsic rotation and radial electric field at the tokamak edge. Here, we present a framework to investigate these effects when the neutrals dominate the momentum transport. We explore the parameter space num
Externí odkaz:
http://arxiv.org/abs/1604.08028
BOUT++ is a software package designed for solving plasma fluid models. It has been used to simulate a wide range of plasma phenomena ranging from linear stability analysis to 3D plasma turbulence, and is capable of simulating a wide range of drift-re
Externí odkaz:
http://arxiv.org/abs/1602.06747
Autor:
Omotani, John
This thesis treats several topics in the study of extra-dimensional models of the world, concerning Heterotic M-Theory and the dynamics of branes. We describe a reduction to five dimensions, over a Calabi-Yau manifold, of an improved version of Heter
Externí odkaz:
http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.559542
The propagation of filaments in the Scrape Off Layer (SOL) of tokamaks largely determine the plasma profiles in the region. In a conduction limited SOL, parallel temperature gradients are expected, such that the resistance to parallel currents is gre
Externí odkaz:
http://arxiv.org/abs/1508.04085