EXPERIMENTAL-DATA BASE FOR NUMERICAL SIMULATIONS OF TURBULENT-DIFFUSION FLAMES

The objective of the presented measurements is to provide an experimen tal data base far comparison with numerical simulation results of turb ulent H-2-air diffusion flames. Additionally, the date base may also b e used for a proof of new measurement techniques, when the same flame conditions are applied. The data base contains time and spatial resolv ed data on all three velocity components, all Reynolds-stress tenser c omponents, temperature, mixture fraction, species concentrations, high er statistical moments of these quantities and probability, density fu nctions for three different flames. The data are given as original mea surement data in dependence on flame conditions and location in the fr ame, as absolute and normalized data and as-evaluated data, like aniso tropy tenser. The measurements are made to improve the understanding o f turbulent transport processes under the influence of combustion and to help the effort to couple the turbulence and combustion model. A La ser-Doppler-Velocimeter was used to obtain three velocity components s imultaneously. Temperature was measured with spontaneous Raman-Rayleig h spectroscopy and Coherent Anti-Stokes Raman spectroscopy, separately , while species concentrations and mixture fraction are measured with spontaneous Raman-Rayleigh spectroscopy. Measurements are done from no zzle exit into the self-preserving region up to x/d = 100 so that the whole flow field including all boundary conditions are quantified for numerical prediction. A mixture of hydrogen and nitrogen with a mole r atio of 1:1 is used as fuel. Reynolds number and Froude number are set at different values. This complete data set is available upon request .