Numerical Prediction of Non-equilibrium Flows in Hypersonic Nozzles: State-to-State Kinetics Versus Macroscopic Models.

Numerical experiments are presented aimed at comparing the behavior of state-to-state chemical kinetics models with respect to the macroscopic thermochemical non-equilibrium models that are usually used in the numerical computation of high temperature hypersonic o ws. The comparison is focused both on the differences in the numerical results and on the computational effort related to the adoption of the each approach.

[1]  D. Kewley.  Numerical study of anharmonic diatomic relaxation rates in shock waves and nozzles , 1975 .

[2]  Graham V. Candler,et al.  Review of Chemical-Kinetic Problems of Future NASA Missions, II: Mars Entries , 1993 .

[3]  E. Toro.  Riemann Solvers and Numerical Methods for Fluid Dynamics , 1997 .

[4]  D. Giordano,et al.  Non-Arrhenius NO formation rate in one-dimensional nozzle airflow , 1999 .

[5]  M. Pandolfi.  A Contribution to the Numerical Prediction of Unsteady Flows , 1983 .

[6]  Mario Capitelli,et al.  Plasma Kinetics in Atmospheric Gases , 2000 .

[7]  S. Osher,et al.  Uniformly high order accurate essentially non-oscillatory schemes, 111 , 1987 .

[8]  G. Candler,et al.  Thermal rate constants of the O2+N→NO+O reaction based on the A2′ and A4′ potential-energy surfaces , 1997 .

[9]  S. Osher,et al.  Regular ArticleUniformly High Order Accurate Essentially Non-oscillatory Schemes, III , 1997 .

[10]  P. V. Marrone,et al.  Chemical Relaxation with Preferential Dissociation from Excited Vibrational Levels , 1963 .

[11]  Roger C. Millikan,et al.  Systematics of Vibrational Relaxation , 1963 .

[12]  Graham V. Candler,et al.  Thermal rate constants of the N 2 +O→NO+N reaction using ab initio 3 A″ and 3 A' potential energy surfaces , 1996 .

[13]  B. Shizgal,et al.  Vibrational nonequilibrium in a supersonic expansion with reaction: Application to O2–O , 1996 .

[14]  Strong vibrational nonequilibrium in supersonic nozzle flows , 1963 .

[15]  J. D. Teare,et al.  Theory of Radiation from Luminous Shock Waves in Nitrogen , 1959 .

[16]  Graham V. Candler,et al.  Computation of weakly ionized hypersonic flows in thermochemical nonequilibrium , 1991 .

[17]  P. V. Marrone,et al.  Effect of Dissociation on the Rate of Vibrational Relaxation , 1962 .

[18]  D. Giordano,et al.  NO formation in one-dimensional nozzle air flow with state-to-state nonequilibrium vibrational kinetics , 1998 .

[19]  S. Candel,et al.  A unified nonequilibrium model for hypersonic flows , 1991 .

[20]  Chul Park,et al.  Problems of Rate Chemistry in the Flight Regimes of Aeroassisted Orbital Transfer Vehicles , 1984 .