The development of an explicit thermochemical nonequilibrium algorithm and its application to compute three dimensional AFE flowfieldsThis study presents a three-dimensional explicit, finite-difference, shock-capturing numerical algorithm applied to viscous hypersonic flows in thermochemical nonequilibrium. The algorithm employs a two-temperature physical model. Equations governing the finite-rate chemical reactions are fully-coupled to the gas dynamic equations using a novel coupling technique. The new coupling method maintains stability in the explicit, finite-rate formulation while allowing relatively large global time steps. The code uses flux-vector accuracy. Comparisons with experimental data and other numerical computations verify the accuracy of the present method. The code is used to compute the three-dimensional flowfield over the Aeroassist Flight Experiment (AFE) vehicle at one of its trajectory points.
Document ID
19890055846
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Palmer, Grant (NASA Ames Research Center Moffett Field, CA, United States)