Zobrazeno 1 - 10
of 13 766
pro vyhledávání: '"A. Hole"'
We investigate the solutions of the relaxed MHD model (RxMHD) of Dewar \& Qu [J. Plasma Phys. {\bf 88}, 835880101 (2022)]. This model is a generalization of Taylor relaxation that allows the ideal Ohm's law constraint to be included, and this offers
Externí odkaz:
http://arxiv.org/abs/2412.03931
Autor:
Moerman, Bente, Breivik, Øyvind, Hole, Lars R., Hope, Gaute, Johannessen, Johnny A., Rabault, Jean
In order to perform a sensitivity analysis of Lagrangian trajectory models, Lagrangian trajectory simulations have been compared to six OpenMetBuoy-v2021 drifter trajectories in the Agulhas Current System (Jan-Mar 2023). Three different Lagrangian tr
Externí odkaz:
http://arxiv.org/abs/2409.20096
A method for the automatic classification of the orbits of magnetic field lines into topologically distinct classes using the Vietoris-Rips persistent homology is presented. The input to the method is the Poincare map orbits of field lines and the ou
Externí odkaz:
http://arxiv.org/abs/2408.09298
Autor:
Hole, Arne
If an algorithm is to be counted as a practically working solution to a decision problem, then the algorithm must must verifiable in some constructed and ``trusted'' theory such as PA or ZF. In this paper, a class of decision problems related to inco
Externí odkaz:
http://arxiv.org/abs/2406.16843
We present a novel family of particle discretisation methods for the nonlinear Landau collision operator. We exploit the metriplectic structure underlying the Vlasov-Maxwell-Landau system in order to obtain disretisation schemes that automatically pr
Externí odkaz:
http://arxiv.org/abs/2404.18432
Autor:
Hope, Gaute, Seldal, Torunn Irene, Rabault, Jean, Bryhni, Helge Thomas, Bohlinger, Patrik, Björkqvist, Jan-Victor, Nordam, Tor, Kleven, Atle, Mostaani, Arsalan, Furevik, Birgitte Rugaard, Hole, Lars Robert, Storvik, Roger, Breivik, Øyvind
Small lightweight wave buoys, SFYs, designed to operate near the coast, have been developed. The buoys are designed to record and transmit the full time series of surface acceleration at $52$ Hz. The buoy uses the cellular network to transfer data an
Externí odkaz:
http://arxiv.org/abs/2401.02286
We present a capacity expansion model for deciding the new electricity generation and transmission capacity to complement an existing hydroelectric reservoir system. The objective is to meet a forecast demand at least expected cost, namely the capita
Externí odkaz:
http://arxiv.org/abs/2312.08556
Autor:
Ølberg, Judith Thu, Bohlinger, Patrik, Breivik, Øyvind, Christensen, Kai H., Furevik, Birgitte R., Hole, Lars R., Hope, Gaute, Jensen, Atle, Knoblauch, Fabian, Nguyen, Ngoc-Thanh, Rabault, Jean
This study reviews the design and signal processing of ship borne ultrasonic altimeter wave measurements. The system combines a downward facing ultrasonic altimeter to capture the sea surface elevation as a time series, and an inertial measurement un
Externí odkaz:
http://arxiv.org/abs/2310.03101
Collisions are an important dissipation mechanism in plasmas. In one-dimensional modelling, a commonly used collision operator is the Lenard-Bernstein operator, or its modified energy- and momentum-conserving counterpart. When approximating such oper
Externí odkaz:
http://arxiv.org/abs/2309.16894
We present a novel numerical method for solving the anisotropic diffusion equation in magnetic fields confined to a periodic box which is accurate and provably stable. We derive energy estimates of the solution of the continuous initial boundary valu
Externí odkaz:
http://arxiv.org/abs/2306.00423