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Particle Simulations of Plasma Turbulence

 

Massively Parallel Computations in 3D Geometry
 
The goal of this project was to provide 3D visualization of particle simulations of plasma turbulence. Visualization is based on Science 281, 1835(1998).The dataset has 1,000 time steps with a resolution of 32x321x129. We visualize turbulent electrostatic potential, and show poloidal contour plot, flux-surface contour plot at r/a=0.25, and isosurface of high (red band) and low (blue band) potential.

 

VIEW OF TORUS

 

 

INITIAL CONDITION

 

 

SIMULATION WITH ZONAL FLOWS

 

 

SIMULATION WITHOUT ZONAL FLOWS

 

 

COMPARISON OF NONLINEAR MODE STRUCTURE: EFFECTS OF ZONAL FLOWS

 

 

LINEAR EIGENMODE: SAME STRUCTURE WITH OR WITHOUT ZONAL FLOWS

 

 

NONLINEAR MODE STRUCTURE: DECORRELATION BY ZONAL FLOWS

 

 

OBJECT SEGMENTATION RESULTS

Object Segmentation Result of BP0500 dataset. Threshold Value is 0.4. Minimum object size is 200.We use computed volume to color the objects.

 

 

FEATURE TRACKING RESULTS

 

                          T0500                                                                     T0519                                                                   T0529

                    

 

 

                       T0539                                                                     T0549                                                                   T0559

 

                    

 

 

                       T0569                                                                     T0579                                                                   T0599

 

                    

 

 

CPES Visualization

 

 

 

 

               

 

We would like to thank Dr. Zhihong Lin at Princeton Plasma Physics Laboratory (PPPL), for the simulation model and dataset.

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