Visualization of the Flux Rope Generation Process Using Large Quantities of MHD Simulation Data

Y Kubota,K T Murata,K Yamamoto,K Fukazawa

doi:10.2481/dsj.wds-023

Abstract

We present a new concept of analysis using visualization of large quantities of simulation data. The time development of 3D objects with high temporal resolution provides the opportunity for scientific discovery. We visualize large quantities of simulation data using the visualization application 'Virtual Aurora' based on AVS (Advanced Visual Systems) and the parallel distributed processing at Space Weather Cloud in NICT based on Gfarm technology. We introduce two results of high temporal resolution visualization: the magnetic flux rope generation process and dayside reconnection using a system of magnetic field line tracing.

Highlights

As supercomputer capacity increases, we can work with high precision simulation data when we need to visualize large quantities of simulation data by using 3D visualization techniques. Matsuoka et al (2008) analyzed 3D structures of magnetic flux rope in the terrestrial magnetosphere by using these techniques
We introduce two results of high temporal resolution visualization: the magnetic flux rope generation process and dayside reconnection using a system of magnetic field line tracing
The first visualization using the high temporal resolution visualization system with fixed starting points concerned the generation process of a flux rope, which is a small structure generated from a spiral field line by magnetic reconnection and related to a release of solar wind energy at the magnetotail

Summary

INTRODUCTION

We can work with high precision simulation data when we need to visualize large quantities of simulation data by using 3D visualization techniques. Matsuoka et al (2008) analyzed 3D structures of magnetic flux rope in the terrestrial magnetosphere by using these techniques. Matsuoka et al (2008) analyzed 3D structures of magnetic flux rope in the terrestrial magnetosphere by using these techniques. These authors visualized simulation data in a specific time and space region because their computational resources had limits. Our visualization technique provides the opportunity for real scientific discovery because we can see small and large scale structures at the same time. In the other the starting points of the magnetic field lines moved with stream elements following their velocity.

Global MHD simulation data

Visualization techniques using parallel distributed processing

Visualization of simulation results

Visualization of the magnetic flux rope

CONCLUSION