6 papers
Eliminating turbulent self-interaction through the parallel boundary condition in local gyrokinetic simulations
Justin Ball, Stephan Brunner, Ajay C. J
In this work, we highlight an issue that may reduce the accuracy of many local nonlinear gyrokinetic simulations - turbulent self-interaction through the parallel boundary conditio…
Gyrokinetic Simulations on Many- and Multi-core Architectures with the Global Electromagnetic Particle-In-Cell Code ORB5
Noé Ohana, Claudio Gheller, Emmanuel Lanti +3
Gyrokinetic codes in plasma physics need outstanding computational resources to solve increasingly complex problems, requiring the effective exploitation of cutting-edge HPC archit…
First principles gyrokinetic analysis of electromagnetic plasma instabilities
Natalia Tronko, Alberto Bottino, Cristel Chandre +5
A two-fold analysis of electromagnetic core tokamak instabilities in the framework of the gyrokinetic theory is presented. First principle theoretical foundations of the gyrokineti…
The effect of background flow shear on gyrokinetic turbulence in the cold ion limit
Justin Ball, Stephan Brunner, Ben F. McMillan
The cold ion limit of the local gyrokinetic model is rigorously taken to produce a nonlinear system of fluid equations that includes background flow shear. No fluid closure is requ…
Pullback scheme implementation in ORB5
Alexey Mishchenko, Alberto Bottino, Alessandro Biancalani +9
The pullback scheme is implemented in the global gyrokinetic particle-in-cell code ORB5 [S. Jolliet et al, Comp. Phys. Comm., 177, 409 (2007)] to mitigate the cancellation problem…
A portable platform for accelerated PIC codes and its application to GPUs using OpenACC
F. Hariri, T. M. Tran, A. Jocksch +6
We present a portable platform, called PIC_ENGINE, for accelerating Particle-In-Cell (PIC) codes on heterogeneous many-core architectures such as Graphic Processing Units (GPUs). T…