Numerical and experimental investigations of geometrical parameters on GH2/GO2 injector

摘要: Abstract To study the influence of injector geometrical parameters on combustor flow fields, detailed numerical and experimental investigations a single-element with gaseous hydrogen oxygen (GH2/GO2) propellants were performed at atmospheric pressure. The field characteristics three different forms: shear-coaxial, swirl-coaxial dual-swirl discussed. simulations combustion process use steady Reynolds-averaged Navier-Stokes (RANS) techniques base ANSYS software conducted. Realizable k-e turbulence model eddy-dissipation concept employed taking into account reactions chemical kinetics. Results from demonstrated flame structures fields. Subsequently, an advanced, non-intrusive optical diagnostics approach was adopted, including high-speed imaging OH* chemiluminescence. results show that swirl elicits distinctly ignition process, in which heat load substantial damage to chamber wall. Finally, help advanced processing method, it verified validation simulated acquired specific linear relationship between data calculations.