4 papers
Adaptive Multi-Dimensional Particle In Cell
Giovanni Lapenta
Kinetic Particle In Cell (PIC) methods can extend greatly their range of applicability if implicit time differencing and spatial adaption are used to address the wide range of time…
Predictor-Corrector Preconditioners for Newton-Krylov Solvers in Fluid Problems
G. Lapenta, S. Ju
We propose an alternative implementation of preconditioning techniques for the solution of non-linear problems. Within the framework of Newton-Krylov methods, preconditioning techn…
Spontaneous large scale momentum exchange by microinstabilities: an analogy between tokamaks and space plasmas
Giovanni Lapenta
Based on a recent theory (Coppi, Nuclear Fusion, 42, 1, 2002) of spontaneous toroidal rotation in tokamaks (Lee et al, Phys Rev Lett, 91, 205003, 2003) and in astrophysical accreti…
The algorithms of the implicit moment method for plasma simulation
Giovanni Lapenta
We discuss the fundamentals of the implicit moment method for Particle In Cell (PIC) simulation as presently implemented in the CELESTE3D code. We present the method in its fully e…