Reacting Hybrid Reynolds-Averaged Navier-Stokes/Large-Eddy Simulation of a Supersonic Cavity Flameholder

Hassan, Ezeldin A.; Peterson, David M.; Hagenmaier, Mark A.

doi:10.2514/6.2016-4566

Cited by 11 publications

(1 citation statement)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Since a scramjet engine is an air-breathing engine, and C 2 H 4 was the fuel for the RD1 flight test, a C 2 H 4 /Air reaction mechanism is required. Although some reduced reaction mechanisms applicable to C 2 H 4 /Air reaction simulations have been proposed (for example, a 31-species model by Zambon et al [5], the 3-step (7 species) model by Mawid et al [6], and the modified 3-step models by Eklund et al [7] and Hassan et al [8]), the reproducibility of the combustion characteristics changes depending on the simulation target and conditions focused on. Therefore, finding a versatile reaction mechanism from existing reduced mechanisms is generally difficult.…”

Section: Introductionmentioning

confidence: 99%

Reaction mechanism reduction for ethylene-fueled supersonic combustion CFD

et al. 2023

View full text Add to dashboard Cite

CHEMKIN-Pro was used to build a custom-made reduced reaction mechanism for a 3D simulation of C2H4/Air reaction in a supersonic combustion ramjet (scramjet) combustor for the JAXA S-520-RD1 flight test performed on 24 July 2022. It was also attempted to reproduce the effect of unavoidable H2O vitiation in the facility (ground) test on combustion characteristics. USC Mech II (a 111-species mechanism) was applied as the master mechanism. First, 1D simulation was conducted by applying a plug flow reactor model; 34-, 23-, 20-, 18-, and 19-species mechanisms were suggested as candidates for reduced mechanism. Then, 0D ignition delay simulation by applying a perfectly stirred reactor model by CHEMKIN-Pro, 2D reacting flow simulation by CRUNCH CFD, and 3D reacting flow simulation by RANS were performed to select the most suitable reduced mechanism. The 20-species (96-elementary-reactions) mechanism consisted of H2, O2, N2, H2O, CO2, CO, H, O, OH, HO2, CH2, CH2*, CH3, HCO, CH2O, CH3O, C2H2, C2H3, C2H4, and CH2CHO and was selected as the best-reduced reaction mechanism for C2H4-fueled 3D simulation under the flight and facility conditions corresponding to the RD1 flight test.

show abstract