Convegni ATI - Accesso riservato soci CTI

Autore: R. Luccioli, S. Traverso, F. Pittaluga, F. Beltrami, M. Mennucci

Collana: AA - 1996 Genova - Turbomacchine '96

Note:
The study deals and reports on the first applicative outcome obtained through a very recent and specific "combustive" extension implemented into "NAST", a previously fluid-dynamic-only Navier-Stokes solver, based, for each time step advancement, on a lagrangian scheme, followed by a grid-geometry-restoring eulerian phase.
The turbulence model, here applied within an ensamble-averaged scheme and not a LES situation, belongs to the sub-grid-scale family, typical of the locally space-filtered schemes: however, it has been properly corrected for the large-scale contributions which, here, are not resolved by the grid. Combustion process modeling relies on a partial-equilibrium approach based on a quasi-global scheme, extended with a proper set of elementary reactions. Turbolence-chemical kinetics interactions are taken into account through fluctuations-dependent correction operated onto Arrhenius rates.