Measurement of the conditioned turbulence and temperature field of a premixed Bunsen burner by planar laser Rayleigh scattering and stereo particle image velocimetry

摘要: The turbulence and temperature field of Bunsen-type turbulent lean methane/air flames has been investigated using planar laser Rayleigh scattering (PLRS) stereo particle image velocimetry (stereo PIV). Temporally averaged reaction progress variable plots have computed from PLRS measurements in order to provide a basis with regards the verification computational fluid dynamics (CFD) models. Turbulence was characterised by PIV one plane for all three velocity components. Averaged fields calculated, as well Reynolds-decomposed fluctuation vector fields. Conditioned root mean square (RMS) values fluctuations terms unburnt burnt gas could be determined making use information gained threshold setting procedure raw images. Furthermore, several length scales were measured indirectly plots. In this context, integral being accessible separately regions compared each other. It observed that increased zone. Additionally, conditioned Taylor Kolmogorov lengths extracted data, derived either zero-radius curvature correlation function or common theory relations.