Analyzing and Tracking Burning Structures in Lean Premixed Hydrogen Flames

— This paper presents topology-based methods to robustly extract, analyze, and track features defined as subsets of isosurfaces. First, we demonstrate how features identified by thresholding isosurfaces can be defined in terms of the Morse complex. Second, we present a specialized hierarchy that encodes the feature segmentation independent of the threshold while still providing a flexible multi-resolution representation. Third, for a given parameter selection we create detailed tracking graphs representing the complete evolution of all features in a combustion simulation over several hundred time steps. Finally, we discuss a user interface that correlates the tracking information with interactive rendering of the segmented isosurfaces enabling an in-depth analysis of the temporal behavior. We demonstrate our approach by analyzing three numerical simulations of lean hydrogen flames subject to different levels of turbulence. Due to their unstable nature, lean flames burn in cells...

• Type: Journal
• Year: 2010
• Where: TVCG
• Authors: Peer-Timo Bremer, Gunther H. Weber, Valerio Pascucci, Marc Day, John B. Bell
• Keywords: Parameters, Turbulence, TVCG 2010, flexible Multi-resolution Representation