Computational Assessment of Gaseous Reacting Flows in Single Element Injector

Emre Sozer, Aravind Vaidyanathan, Corin Segal, Wei Shyy
2009 47th AIAA Aerospace Sciences Meeting including The New Horizons Forum and Aerospace Exposition   unpublished
The injector flow is challenging to predict due to the complex physics involving recirculation, turbulence, mixing between multiple species and chemical reactions. This work is aimed at assessing the capability of a RANS-based computational modeling tool for gaseous injector flows. Both combustion effectiveness and chamber wall heat transfer profiles are examined to shed light on issues most pertinent to injector design. Two injector flow experiments by different researchers have been adopted
more » ... have been adopted to facilitate a direct comparison of the wall heat transfer data. For mixingdominated cases studied in these experiments, without detailed account for turbulence-chemistry interactions, particular choice of the chemical kinetics scheme is shown to be of minor importance. The near wall treatment of the turbulence model can noticeably impact the outcome of the simulation. While the results reported by various researchers for the same experiment vary noticeably, it seems that refinements of turbulence-chemistry interactions and the near wall treatment are needed. Nomenclature = control volume = control surface = total specific energy of the mixture = inviscid flux vector = viscous flux vector = species specific enthalpy = turbulent specific kinetic energy = backward reaction rate = forward reaction rate = equilibrium constant = species molecular weight = surface normal
doi:10.2514/6.2009-449 fatcat:pzyk6xzypvcqhblhgxgykalr4q