An energy bin based coupling model for recombination is used to simulate flows over double-cones. The inherent coupling between rotational and vibrational modes is taken into account by the use of energy bins. A prior recombination distribution of molecules dependent on the total energy available to a recombining system is obtained using information theory. The low-lying electronic states of oxygen are also considered. The reservoir conditions of the shock tunnel are re-computed based on the energy bin approach to simulate the nozzle flowfield. The new test section conditions are used to compute the flow over the double-cone geometry. The results are compared with a previous study ("Numerical Comparison of Double-Cone Flow Experiments with High-Enthalpy Effects", AIAA-2010-1283). The comparison shows that the energy-bin approach improves the prediction of the wall pressure and heat flux. Sensitivity to the model parameters in the energy bin approach is also investigated.
|Original language||English (US)|
|State||Published - 2012|
|Event||50th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition - Nashville, TN, United States|
Duration: Jan 9 2012 → Jan 12 2012
|Other||50th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition|
|Period||1/9/12 → 1/12/12|