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On the Effects of Chemical Kinetics and Thermal Conditions on the Flow and Flame Features in a Single-Element GCH4/GOX Rocket Combustor
| Content Provider | Semantic Scholar |
|---|---|
| Author | Ranjan, Reetesh Panchal, Achyut Menon, Suresh M. |
| Copyright Year | 2016 |
| Abstract | The effects of chemical kinetics and thermal boundary conditions on the stable combustion within a subscale rocket combustor are studied through large-eddy simulations. The combustor considered in the present study is a single element, shear coaxial, GOX/GCH4 subscale rig, which is hosted at the Technische Universität München (TUM). We employ finite-rate kinetics within LES, where we consider three different chemical kinetics with varying level of complexity and two different thermal boundary conditions on the combustion chamber wall to analyze their effects on the features of the reacting flow. Analysis of the instantaneous and time-averaged results indicate that while the effect of chemical kinetics is noticeable due to differences in the predicted value of products temperature, which affects the flow and flame features, the effect of thermal boundary conditions only show marginal differences in the predicted turbulence statistics. Quantitative comparison of the predicted wall pressure and wall heat flux with the experimental data showed that while normalized pressure variation agrees reasonably well, the heat flux is under-predicted in all the cases, which can be attributed to a relatively coarse near-wall grid resolution with no wall model for turbulence and require further investigations. |
| File Format | PDF HTM / HTML |
| DOI | 10.2514/6.2016-4999 |
| Alternate Webpage(s) | http://www.prism.gatech.edu/~rranjan7/papers/TUMChemThermal.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
