Zobrazeno 1 - 10
of 41
pro vyhledávání: '"Kenji Imadera"'
Publikováno v:
Entropy, Vol 26, Iss 6, p 494 (2024)
A methodology to study statistical properties of anomalous transport in fusion plasma is investigated. Three time traces generated by the full-f gyrokinetic code GKNET are analyzed for this purpose. The time traces consist of heat flux as a function
Externí odkaz:
https://doaj.org/article/7d2b3385bf4849b3ba42a226d089e78a
Publikováno v:
Nuclear Fusion, Vol 64, Iss 8, p 086006 (2024)
Aiming at a fuel supply through particle pinch effects, turbulent particle transport is studied by gyrokinetic flux-driven Ion-Temperature-Gradient/Trapped-Electron-Mode (ITG/TEM) simulations. It is found that ITG/TEM turbulence can drive ion particl
Externí odkaz:
https://doaj.org/article/12c7a7d3a63a47cb9a6860ef7717decd
Autor:
Yasuaki Kishimoto, Kenji Imadera
Publikováno v:
Radiation Effects and Defects in Solids. 175:1021-1025
We present a picture of flux-driven ITG turbulence and associated transport with heat source and sink which reveals resilience and stiffness coupled with SOC type intermittent bursts. The transport...
Autor:
Kenji Imadera, Yasuaki Kishimoto
Publikováno v:
Plasma Physics and Controlled Fusion. 65:024003
The formation mechanism of internal transport barriers (ITBs) in flux-driven turbulence is studied by means of the full-f gyrokinetic code GKNET. In the adiabatic electron case with a weak magnetic shear configuration, toroidal momentum injection can
Publikováno v:
Nuclear Fusion. 62:112006
A linear δf version of the gyro-kinetic Vlasov code GKNET (Gyro-Kinetic Numerical Experiment of Tokamak) is extended to the global cylindrical coordinates (R, φ, Z) and includes the kinetic electron response, to study the shaping effect on linear d
Publikováno v:
Physics of Plasmas. 29:052503
Full-f gyrokinetic simulations of ion temperature gradient (ITG) turbulence in the presence of a magnetic island are performed. A newly developed method for evaluating the flux-surface average is implemented to treat adiabatic electrons inside the ma
Publikováno v:
Radiation Effects and Defects in Solids. 173:165-168
Publikováno v:
Nuclear Fusion. 61:114002
In order to realize high performance burning plasmas in magnetic-confinement fusion devices, such as tokamaks, both bulk plasma transport and that of energetic fusion alpha-particles, which result from different scale fluctuations with different free
Publikováno v:
Physics of Plasmas. 28:082304
Overall entropy balances and radial dynamics for thermodynamic entropy and conventional fluctuation entropy are investigated by means of newly derived coupled equations and the full-f gyrokinetic simulations for toroidal flux-driven ion-temperature-g
Publikováno v:
Computer Physics Communications. 216:8-17
A toroidal gyrokinetic full-f code GKNET (GyroKinetic Numerical Experimental Tokamak) with field solver in real space has been developed recently to simulate micro-turbulence dynamics in the circular cross-section tokamak plasmas (Obrejan et al., 201