Fig. 10
From: A numerical shallow-water model for gravity currents for a wide range of density differences
Numerical results of a one-layer dilute PDC model for the dam-break problem. Heights h L at a t=1 and b t=10 are shown for cases of entraining (solid curves) and non-entraining (dotted curves) currents. The initial density ratio (\(\rho _{\mathrm {L}}^{*}/\rho _{\mathrm {a}}\)) is set to 8.495, and the BC model is applied. The variables are non-dimensionalized using the initial values (e.g., Eqs. (4) and (5)). Given parameters: aspect ratio (initial height/initial length) =1; initial particle concentration =0.005; density ratio (particles/air) =1500; density ratio (volcanic gas/air) =1; and non-dimensional particle settling speed =0.05