Alan Norton
NCAR Computational and Information Systems Lab

Multiresolution Analysis and Visualization Using VAPOR

A desktop suite of analysis and visualization tools ("VAPOR") has been developed at NCAR for interactive analysis of huge datasets. Simulation data on very large grids are analyzed and visualized directly from a wavelet representation, enabling interactive isolation of current sheets and vortices, and analysis of their time-evolution.
We present methods of combining quantitative and visualization techniques to identify and analyze structures, such as folds and current sheets, resulting from three-dimensional MHD flow simulation. These methods have been applied to the results of direct numerical simulations with grids as large as 15363 points. Flow integration and volume rendering are applied to local regions in the grid, combined with numerical analysis to characterize geometric structures that result. Vapor is also used to exhibit the time-evolution of magnetic field lines in a velocity field.