GTEDGE-2: A particle, momentum {\&} energy conserving plasma transport code.
POSTER
Abstract
We have reformulated fluid plasma transport theory to rigorously satisfy particle, momentum and energy conservation by: a) retaining long range E{\&}M forces in the momentum balance in the derivation of a ``pinch-diffusion'' theory for the particle density [1]; b) taking into account the loss of plasma ions, momentum and energy by thermalized ions that access orbits that cross the separatrix and are ``ion orbit loss'' from the outflowing ion distribution [2]; c) incorporating these effects into the calculation of radial particle and energy fluxes and a rotation theory for toroidal and poloidal velocities [3]; and c) self-consistently modifying fluid plasma transport theory to incorporate these new effects and demonstrate their importance in the analysis of experiments [4,5]. The extended fluid transport formalism coupled to a 2D GTNEUT neutral particle transport code [6], which will provide a much improved edge pedestal analysis capability, introduces a need to modify the existing numerical iteration strategies. REFS: 1) Contr. Plas. Phys. 48, 94 (2008); 2) Phys. Plasmas 18, 102504 (2011); 3) Phys. Plasmas 20, 092508 (2013); 4) Nuc. Fus.57, 066034 (2017); 5) FS{\&}T 75,251(2019); 6) Phys. Plasmas 13,062509 (2006) and 17, 022507 (2005).
Authors
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E. W. DeShazer
Georgia Institute of Technology
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Weston Stacey
Georgia Institute of Technology