Results 31 to 40 of about 2,473,114 (224)

AMMONX: A kinetic ammonia production scheme for EIRENE implementation

Nuclear Materials and Energy, 2019
Until recently the EIRENE suite handled hydrogen chemistry (i.e. H atoms, H2 molecules, and H2+ molecular ions and their isotopomers). Extensions also exist for hydrocarbon chemistry, including CxHy species (H is any hydrogen isotope), but no kinetic ...
S. Touchard, J. Mougenot, C. Rond, K. Hassouni, X. Bonnin   +4 more
doaj   +1 more source

Ultra long turbulent eddies, magnetic topology, and the triggering of internal transport barriers in tokamaks

Nuclear Fusion, 2022
Local nonlinear gyrokinetic simulations of tokamak plasmas demonstrate that turbulent eddies can extend along magnetic field lines for hundreds of poloidal turns when the magnetic shear is very small.
Arnas Volčokas, Justin Ball, Stephan Brunner   +2 more
doaj   +1 more source

Edge Fluid Turbulence Simulations of Stellarators With GRILLIX

Contributions to Plasma Physics, EarlyView.
ABSTRACT The edge fluid turbulence code GRILLIX has recently been extended from axisymmetric tokamak geometries to support 3D stellarator configurations. Following successful proof‐of‐principle simulations published in Stegmeir et al., we present here a comprehensive simulation of the Wendelstein 7‐AS stellarator.
Andreas Stegmeir, Christoph Pitzal, Barnabas Csillag, Miguel Madeira, Marion Finkbeiner   +4 more
wiley   +1 more source

Tokamak Systems Code [PDF]

, 1985
The FEDC Tokamak Systems Code calculates tokamak performance, cost, and configuration as a function of plasma engineering parameters. This version of the code models experimental tokamaks.
Spampinato, P. T., Gorker, G. E., Hooper, R. J., Metzler, D. H., Roth, K. E., Peng, Y. K. M., Reid, R. L., Brown, T. G., Kalsi, S. S., Barrett, R. J.   +9 more
core   +1 more source

2D Implementation of Kinetic‐Diffusion Monte Carlo in Eiron

Contributions to Plasma Physics, EarlyView.
ABSTRACT Particle‐based kinetic Monte Carlo simulations of neutral particles are one of the major computational bottlenecks in tokamak scrape‐off layer simulations. This computational cost comes from the need to resolve individual collision events in high‐collisional regimes.
Oskar Lappi, Emil Løvbak, Thijs Steel, Giovanni Samaey   +3 more
wiley   +1 more source

Plasma boundary reconstruction and shape control of Tokamak discharges in RFX-mod [PDF]

, 2011
La tesi si occupa del controllo di forma del plasma in configurazione Tokamak a doppio nullo nell’esperimento RFX-mod. Vengono affrontate problematiche di ricostruzione della forma, con un apporto originale nell’utilizzo di una interpolante thin plate ...
Merlo, Pierangelo
core  

Modeling rf sheath formation in turbulent tokamak boundary plasma [PDF]

EPJ Web of Conferences
During ICRF antenna operation, complex interactions between turbulent density profiles, nonlinear RF sheaths, and RF-induced convective transport are observed to alter plasma density in the tokamak edge [D’Ippolito et al., Nucl. Fusion 38, 1543 (1998)].
Jenkins Thomas G., Smithe David N., Umansky Maxim V., Myra James R., Dudson Benjamin D.   +4 more
doaj   +1 more source

Resonant mode effects on rotation braking induced by n = 1 resonant magnetic perturbations in the EAST tokamak

Nuclear Fusion, 2023
The spectrum effects on toroidal rotation braking, induced by n  = 1 resonant magnetic perturbations (RMPs) in the discharges with $q_{95} = 4.1$ and $q_{95} = 5.1$ , are studied in the EAST tokamak.
H. Sheng, Y.W. Sun, X.Y. Li, H.H. Li, X.M. Wu, Y.Y. Li, S.F. Mao, Q. Ma, Y.Q. Liu, C. Ye, X.T. Yan, P.C. Xie, Q. Zang, H.H. Wang, M.N. Jia, M.Y. Ye, the EAST Team   +16 more
doaj   +1 more source

Effect of Magnetic Islands on Neoclassical Heat Diffusivity in a Global Tokamak Simulation

Contributions to Plasma Physics, EarlyView.
ABSTRACT Resonant magnetic perturbations (RMPs) alter magnetic field topology via island formation and can modify core transport in toroidal fusion devices. Using the global gyrokinetic particle‐in‐cell code XGC‐S, originally developed for stellarator geometries, we quantify how island topology affects neoclassical heat transport in a circular tokamak ...
Joseph X. Li, Toseo Moritaka, Ryutaro Kanno, Gakushi Kawamura, Robert Hager, C.‐S. Chang   +5 more
wiley   +1 more source

Numerical Tokamak Turbulence Project [PDF]

, 1999
The primary research objective of the Numerical Tokamak Turbulence Project (NTTP) is to develop a predictive ability in modeling turbulent transport due to drift-type instabilities in the core of tokamak fusion experiments, through the use of three ...
Nevins, W. M., Dorland, W. D., Shumaker, D. E., Decyk, V. K., Parker, S. E., Hammett, G. W., Kerbel, G. D., Cohen, B., Dimits, A. M., Waltz, R. E., Smith, S., Lee, W. W., Lin, Z., Beer, M., V., Lynch, Reynders, J. V. W., Sydora, R., Williams, T., Leboeuf, J. N., Dawson, J. M.   +19 more
core   +1 more source