K.M. Hall,1 X. Fu, and K. Brezinsky2 1Chemical Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104 2Mechanical and Industrial Engineering,, University of Illinois-Chicago, Chicago, Illinois 60607
Published 17 November 2010 (4 pages)
With the intent of optimizing the combustion process of complex hydrocarbon liquid fuels such as JP8 in internal combustion jet engines and their afterburners, simpler surrogate hydrocarbon compounds were used in a counterflow diffusion flat flame burner to validate the chemical kinetic modeling process. The combustion products sampled from the flame produced during the burning of the validation fuels methane and n-heptane were analyzed using a Varian CP3800 gas chromatograph. The effects of sampling with a 350 micron outer diameter (OD) fused-silica tube were compared to those of a 3.5 mm quartz probe in order to minimize sampling effect on the flame. Simulations of the sampled species were performed using the OPPDIF package of CHEMKIN with chemistry models provided by UIC. Concentrations of major species (e.g. CO, CH4, CO2, O2) were found to be well simulated with the models, with the best fit occurring for methane and n-heptane, and wider variation occurring with some
species in all validation fuels.