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Nonequilibrium Chemical and Radiation Coupling, Part 11: Results for AOTV Flowfields

A flowfield model for the stagnation region of high altitude entry vehicles which includes nonequilibrium chemistry, multitemperature, viscous, conduction, diffusion, coupled nongray nonequilibrium radiative transfer for atoms, and molecules, and local thermodynamic nonequilibrium phenomena has been applied to two Aeroassisted Flight Experiment (AFE) trajectory points, a high-speed return from Mars, a series of points at 80 km for 12-16 km/s, and three altitudes at 16 km/s. Based on these results shock slip is significant, radiation cooling/coupling is minor at AFE conditions but important by 14 km/s and dominant at 16 km/s, radiation for the AFE is small but important and primarily molecular, above 12 km/s atomic radiation is a significant or dominant portion of the total heating, and local thermodynamic nonequilibrium is important and should be included in all cases. Nomenclature cfp = frozen specific heat at constant pressure, Eq. (4) cpr = specific heat at constant pressure of species r Q) = binary diffusion coefficient H = total enthalpy HREF = reference (freestream) total enthalpy h = enthalpy n = surface normal coordinate axis p = pressure