The accompanying files contain digital data for figures in the article "Reduction of blob-filament radial propagation by parallel variation of flows: analysis of a gyrokinetic simulation" by J. R. Myra, S. Ku, D.A. Russell, J. Cheng, I. Keramidas Charidakos, S. E. Parker, R.M. Churchill, and C.S. Chang, submitted to the journal Physics of Plasmas. Abstract Data from the XGC1 gyrokinetic simulation is analyzed to understand the three-dimensional spatial structure and the radial propagation of blob-filaments generated by quasi-steady turbulence in the tokamak edge pedestal and scrape-off layer plasma. Spontaneous toroidal flows vary in the poloidal direction and shear the filaments within a flux surface resulting in a structure that varies in the parallel direction. This parallel structure allows the curvature and grad-B induced polarization charge density to be shorted out via parallel electron motion. As a result, it is found that the blob-filament radial velocity is significantly reduced from estimates which neglect parallel electron kinetics, broadly consistent with experimental observations. Conditions for when this charge shorting effect tends to dominate blob dynamics are derived and compared with the simulation.

This material is based upon work supported by the U.S. Department of Energy Office of Science, Office of Fusion Energy Sciences under Award Number DE-AC02-09CH11466 sub-contract SO15882-C and US DOE Grant DE-FC02-99ER54512, using Alcator C-Mod, a DOE Office of Science User Facility. We thank J. Hughes for providing the Alcator C-Mod geometry and profile data. Discussions with members of the HBPS SciDAC project (Scientific Discovery through Advanced Computing Initiative: High Fidelity Boundary Plasma Simulation) are gratefully acknowledged. We acknowledge the use of computing resources on Titan at the Oak Ridge Leadership Computing Facility at the Oak Ridge National Laboratory through the ALCC (ASCR Leadership Computing Challenge) program administered by the U.S. DOE Office of Science.