Reacting Jet of an Axial-Staged Combustor at High-Pressure

We have explored the operational map of an axial-staged combustor of premixed, non-premixed and partially premixed reacting jet-in-crossflow flames at high-pressure (5 atm). The study attempts to expand the data to relatively high pressure and could significantly aid scaling to real gas turbine engine conditions at 20-30 atm. Results of our papers GT2019-91796 and GT2020-14721 would have major contribution to this poster. The poster would briefly describe the experimental facility with gemoetrical and constructional details. Focus would be on the CFD approach of this facility. Schematics of the mesh grid, description of models and computational resources required could be stated along with the critical CFD objective, which is facilitating understanding of current experimental data and extending the test matrix. The lower half of the poster could be split into three sections, fuel-only flames, partially premixed flames and fully premixed flames. Experimental CH* Chemiluminescence investigations could be presented, giving insight about flame position and ignition kernels. Reacting jet trajectories were evaluated and compared with CFD and empirical data. NOx emissions were predicted with the CFD and their magnitude verified withd ata from the literature. The second section would be on partially premixed flames, comparing experimental camera data with the adapted CFD result, proving an excellent match. CH* Center plane data were extracted from the CFD and compared with flame structures from the experiment. The third section would be on premixed flames with both a 4 mm and a 12.7 mm axial fuel line. The latter flames were shown to be temperature controlled. PIV data were extrapolated for the 3D field and used to obtain the CFD results.