Simulations of non-reacting ethylene/air supersonic flow in a cavity flame holder at Mach 2 and Mach 3

View Video Presentation: https://doi.org/10.2514/6.2023-3300.vid The simulation of supersonic flame holder cavities continues to be an important area of research in the development of scramjet engines. This work discusses RANS simulation of supersonic flame holder cavities at Mach 2 and Mach 3 using the custom OpenFOAM solver rssFOAM [ 29]. The simulations were conducted using four different RANS turbulence models. The results are compared to experimental data on velocity and fuel concentration from [ 16 ], [17], and [ 18]. Results show that the ��2- �� turbulence model provides the best fit to the experimental data for both velocities and mixing at both Mach 2 and Mach 3. While all turbulence models show good agreement with the velocity profiles, the different turbulence models show large differences in mixing. This is believed to be due to the different recirculation zones which develop for each turbulence model. The differences in the recirculation zones are likely due to the near-wall modeling for each of the different turbulence models.