In supersonic and hypersonic flows, thermal and chemical non-equilibrium is one of the fundamental aspects that must be taken into account for the accurate characterization of the plasma. In this paper, we present an optimized methodology to approach plasma numerical simulation by state to-state kinetics calculations in a fully 3D Navier-Stokes CFD solver. Numerical simulations of an expanding flow 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 flows. The comparison is focused both on the differences in the numerical results and on the computational effort associated with each approach.
3D nozzle flow simulations including state-to-state kinetics calculation / Cutrone, L; Tuttafesta, M; Capitelli, M; Schettino, A; Pascazio, G; Colonna, G. - STAMPA. - 1628:(2014), pp. 1154-1161. (Intervento presentato al convegno 29th International Symposium on Rarefi ed Gas Dynamics (RGD) tenutosi a Xian, China nel July 13-18, 2014) [10.1063/1.4902723].
3D nozzle flow simulations including state-to-state kinetics calculation
Cutrone L;Pascazio G;
2014-01-01
Abstract
In supersonic and hypersonic flows, thermal and chemical non-equilibrium is one of the fundamental aspects that must be taken into account for the accurate characterization of the plasma. In this paper, we present an optimized methodology to approach plasma numerical simulation by state to-state kinetics calculations in a fully 3D Navier-Stokes CFD solver. Numerical simulations of an expanding flow 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 flows. The comparison is focused both on the differences in the numerical results and on the computational effort associated with each approach.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.