Professor Felix Parra Diaz: Publications

Intrinsic momentum transport in up-down asymmetric tokamaks

PLASMA PHYSICS AND CONTROLLED FUSION 56:9 (2014) ARTN 095014

Authors:

Justin Ball, Felix I Parra, Michael Barnes, William Dorland, Gregory W Hammett, Paulo Rodrigues, Nuno F Loureiro

The effect of diamagnetic flows on turbulent driven ion toroidal rotationa)

Physics of Plasmas AIP Publishing 21:5 (2014) 056106

Authors:

JP Lee, M Barnes, FI Parra, EA Belli, J Candy

When omnigeneity fails

(2014)

Authors:

Felix I Parra, Ivan Calvo, Jose Luis Velasco, J Arturo Alonso

Effect on plasma rotation of lower hybrid (LH) waves in Alcator C-Mod

AIP Conference Proceedings AIP Publishing 1580:1 (2014) 398-401

Authors:

JP Lee, M Barnes, RR Parker, JE Rice, FI Parra, PT Bonoli, ML Reinke

Radially global $δf$ computation of neoclassical phenomena in a tokamak pedestal

ArXiv 1312.2148 (2013)

Authors:

Matt Landreman, Felix I Parra, Peter J Catto, Darin R Ernst, Istvan Pusztai

Abstract:

Conventional radially-local neoclassical calculations become inadequate if the radial gradient scale lengths of the H-mode pedestal become as small as the poloidal ion gyroradius. Here, we describe a radially global $δf$ continuum code that generalizes neoclassical calculations to allow stronger gradients. As with conventional neoclassical calculations, the formulation is time-independent and requires only the solution of a single sparse linear system. We demonstrate precise agreement with an asymptotic analytic solution of the radially global kinetic equation in the appropriate limits of aspect ratio and collisionality. This agreement depends crucially on accurate treatment of finite orbit width effects.

51��