QDV_Combustion02

These images depict increasing ((a) through (f)) iso-concentrations of water (H2O) colored by values from the correlation field of oxygen (O2) and perhydroxyl radical (HO2). As water concentration increases, the predominant correlation along the isosurface shifts from strongly negative (blue) in (a), to strongly positive (red) in (f). This shift suggests that H2O concentration is itself positively correlated with the O2-HO2 correlation. Local variations in this observed correlation (e.g., the bottom of the isosurfaces transitioning from negative correlation to positive correlation faster than the top of the isosurfaces) are due to the fact that burning occurs unevenly along the isotherms. Such variations in combustion influences both the rates of reactions and the locations of reaction fronts. As such, transitions in correlation are expected to occur at different concentrations in the isosurfaces of H2O. Images generated by Luke Gosink using VisIt. Data provided by Marc Day and John Bell from - Center for Computational Sciences and Engineering at LBNL