Kan Kobayashi, Sadatake Tomioka, Masahiro Takahashi, and Masatoshi Kodera

DOI Number XXX-YYY-ZZZ

Conference Number HiSST-2022-187

To build a reduced reaction mechanism for 3D simulation of C2H4/Air reaction in supersonic
combustion ramjet combustor, CHEMKIN-Pro was used. USC Mech II (111 species mechanism) was
applied as a master mechanism. First, 1D simulation was conducted by applying so-called plug flow
reactor model and 34, 23, 20, 18, and 19 species mechanisms were suggested as candidates of reduced
mechanisms. In addition, 0D ignition delay simulation by applying so-called perfectly stirred reactor
model by CHEMKIN-Pro, 2D reacting flow simulation by CRUNCH CFD, and 3D reacting flow simulation
by RANS were performed to choose the most suitable reduced model. As a result, the 20 species (96
reactions) mechanism which consists of H2, O2, N2, H2O, CO2, CO, H, O, OH, HO2, CH2, CH2*, CH3,
HCO, CH2O, CH3O, C2H2, C2H3, C2H4, and CH2CHO was selected as the best reduced reaction
mechanism for C2H4 fueled 3D simulation.

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In Categories: 1.Events, High-Speed Missions and Vehicles, HiSST 2022
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