2D-DIAGNOSTICS IN INDUSTRIAL-DEVICES

The high spectral brightness of tunable high power excimer lasers allo ws the two- and three-dimensional application of techniques like laser -induced fluorescence (LIF), Mie and Rayleigh scattering for industria l applications. The construction of these lasers allows easy transport ation and installation to perform measurements at combustion facilitie s which can not be moved. In combination with suitable filters and gat ed image-intensified CCD cameras techniques are now available to measu re multi-dimensional distributions of temperatures and concentrations. Simultaneous measurements of temperature fields and hydroxyl radical distributions were performed to study the influence of turbulence on l arge premixed natural gas flames. A combination of temperature and nit ric oxide concentration measurements yielded information about the cor relations between NO formation and burner design in domestic gas burne rs. LIF and Mie scattering of fuel and hydroxyl radicals were used for measurements in IC engine simulators, Otto and Diesel engines.