The Rayleigh–Taylor instability at the interface of two sheared fluid layers in a horizontal channel is investigated absence inertia. dynamics flow described by nonlinear lubrication equation which solved numerically for adverse density stratifications. early-time features number finger-like protrusions different heights interface. fingers travel speeds leading to sequence merging events after ...

We conduct three-dimensional direct numerical simulations to investigate the mixing, entrainment and energy budgets of gravity currents emerging from two-layer stratified locks. Depending on density layer thickness ratios, we find that either upper or lower fluid can propagate faster, structure overall current range strongly near-complete mixing. furthermore observe intermediate values ratio ma...