The onset of convective instability in a vertical porous layer with open boundaries is analysed. The base flow is partly buoyancy-induced and partly caused by an imposed vertical pressure gradient. The linearised perturbation equations expressing the local mass and energy balances, as well as the momentum balance modelled according to Darcy-Forchheimer’s law, are solved numerically in terms of normal modes. The neutral stability curves and the critical Darcy-Rayleigh number are obtained versus the form-drag parameter.
Form-drag effects on unstable buoyant flow in a vertical porous layer with open boundaries / Barletta A.; Rees D.A.S.. - ELETTRONICO. - (2017), pp. 1525-1535. (Intervento presentato al convegno International Symposium on Advances in Computational Heat Transfer, CHT 2017 tenutosi a ita nel 2017) [10.1615/ichmt.2017.1600].
Form-drag effects on unstable buoyant flow in a vertical porous layer with open boundaries
Barletta A.;
2017
Abstract
The onset of convective instability in a vertical porous layer with open boundaries is analysed. The base flow is partly buoyancy-induced and partly caused by an imposed vertical pressure gradient. The linearised perturbation equations expressing the local mass and energy balances, as well as the momentum balance modelled according to Darcy-Forchheimer’s law, are solved numerically in terms of normal modes. The neutral stability curves and the critical Darcy-Rayleigh number are obtained versus the form-drag parameter.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
