Reactive and nonreactive vibrational energy exchanges in nonequilibrium hypersonic flows

摘要: The generalized depletion equations, considering state-to-state kinetics of dissociating nitrogen, were solved to predict the extent vibrational for 4000 and 6000 K. Two different transition rate sets used in analysis. One was based on Schwartz–Slawsky–Herzfeld (SSH) theory other analytical methods Capitelli, Billing, Fisher, Doroshenko co-workers. Transition rates SSH predicted a lower due very high upper levels. With objective delineating vibration–vibration (V–V) exchanges vibration–translation (V–T) transfers nonreactive, vibrationally excited gas dynamic flows, flowfield simulations blunt body expanding nozzles performed. For cooling cases (where temperature is greater than translational temperature) flow past nozzle population distribution showed Treanor-like only at low tr...