Effect of Different Shock Generator Configurations on Ethylene-Fuelled Transverse Injection-Based Scramjet Combustor
Authors :- Pabbala Monish Yadav, Gautam Choubey, Sumit Tripathi
Publication :- Recent Trends in Fluid Dynamics Research. Lecture Notes in Mechanical Engineering. Springer, Singapore. (2022): pp 227-236.
Even though hydrogen is considered and promoted as a prospective fuel for combustion in a scramjet engine, ethylene can operate better under low Mach number speeds and can produce greater thrust at such speeds than hydrogen. This study is focussed on determining the parametric variations in the flow-field, arising due to the adaptation of single and dual shock generators, and the subsequent effects on the combustor. This is a computational study in which ANSYS Fluent software has been used to perform the simulations. Moreover, a simulation of a previously completed experiment is run to verify the solver’s validity, and the findings are remarkably close to the experimental results. Four geometries with shock generators located at different positions, two for each single and dual shock generator modules, are employed for the study. A two-dimensional design with fine-structured mesh is constructed for the study. To register the flow-field dynamics of the simulation, 2D coupled implicit Reynolds’s-averaged Navier–Stokes equations and typical k−ε turbulent model are utilized to evaluate the interaction between the supersonic airflow and the injected ethylene.