Abstract
We present the results of field and theoretical studies of a bottom density flow taking the pulse inflow (outflow) through the upper boundary of the current over which a stratified jet exists into account. An ambiguous parabolic relationship between jet and bottom flow discharges involved in eight systems of currents in water reservoirs and lakes with different types of water density stratification was revealed. The integral stability of stratification over the entire depth of the reservoir was shown to play a decisive role in the current interaction effects. A mathematical model of a density current interacting with a jet was modified and validated. The modifications include the resulting expressions of the turbulent flux of momentum from the jet (and the reverse), the drag coefficient at the current-bottom boundary, and the pressure gradient due to changes in the jet trajectory.
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