42 citations · 111 across the 8 of their papers we have counts for
8 papers
Expanding scroll rings in a model for the photosensitive Belousov-Zhabotinsky reaction
Arash Azhand, Rico Buchholz, Jan F. Totz +1
While free scroll rings are non-stationary objects that either grow or contract with time, spatial confinement can have a large impact on their evolution reaching from significant…
On seed island generation and the non-linear self-consistent interaction of the tearing mode with electromagnetic gyro-kinetic turbulence
William Hornsby, Pierluigi Migliano, Rico Buchholz +4
The multi-scale interaction of self-consistently driven magnetic islands with electromagnetic turbulence is studied within the three dimensional, toroidal gyro-kinetic framework. I…
On the radial propagation of turbulence in gyro-kinetic toroidal systems
P. Migliano, R. Buchholz, S. R. Grosshauser +2
In this paper a conservation equation is derived for the radially dependent entropy in toroidal geometry using the local approximation of the gyro-kinetic framework. This equation…
The linear tearing instability in three dimensional, toroidal gyrokinetic simulations
William Hornsby, Pierluigi Migliano, Rico Bucholz +5
Linear gyro-kinetic simulations of the classical tearing mode in three-dimensional toroidal geometry were performed using the global gyro kinetic turbulence code, GKW . The results…
Effect of turbulence on electron cyclotron current drive and heating in ITER
F. J. Casson, E. Poli, C. Angioni +2
Non-linear local electromagnetic gyrokinetic turbulence simulations of the ITER standard scenario H-mode are presented for the q=3/2 and q=2 surfaces. The turbulent transport is ex…
Nonlinear seed island generation by three-dimensional electromagnetic, gyrokinetic turbulence
William Hornsby, Pierluigi Migliano, Rico Buchholz +4
Turbulence is shown to be critical to the onset and evolution of the neoclassical tearing mode, affecting both its growth and rotation. The interaction is here studied for the firs…
No-flux boundaries stabilize scroll rings in excitable media with negative filament tension
Arash Azhand, Rico Buchholz, Florian Buchholz +2
Scroll rings in an unbounded excitable medium with negative line tension undergo an instability ending eventually in a "turbulent" state, known as scroll wave (Winfree) turbulence.…
Toroidal momentum transport in a tokamak caused by symmetry breaking parallel derivatives
Tobias Sung, Rico Buchholz, Francis Casson +5
A new mechanism for toroidal momentum transport in a tokamak is investigated using the gyro-kinetic model. First, an analytic model is developed through the use of the ballooning t…