Author(s)

J. Kamm, W. Rider, P. Rightley, K. Prestridge, R. Benjamin, P. Vorobieff

Abstract

The gas curtain experimental technique and analysis methodologies J. Kamm', W. Rider % P. Rightley', K. Prestridge', R. Benjamin', P.Vorobieff* ^Los Alamos National Laboratory, Los Alamos, USA ^•University of New Mexico, Albuquerque, USA Abstract The qualitative and quantitative relationship of numerical simulation to the physical phenomena being modeled is of paramount importance in compu- tational physics. If the phenomena are dominated by irregular (i.e., nonsmooth or disordered) behavior, then pointwise comparisons cannot be made and statistical measures are required. The problem we consider is the gas curtain Richtmyer- Meshkov (RM) instability experiments of Rightley et al. [13], which exhibit complicated, disordered motion. We examine four spectral analysis methods for quantifying the experimental data and computed results: Fourier analysis, struc- ture functions, fractal analysis, and continuous wavelet transforms. We investigate the applicability of these methods

Keywords