Hans Burchard

TL;DR: A generalization of a class of differential length-scale equations typically used in second-order turbulence models for oceanic flows is suggested in this article, which can be recovered as special cases of this generic model, and thus can be rationally compared.

TL;DR: In this paper, a review of recent contributions to second-order turbulence modelling is presented, with an emphasis on models of the coastal ocean, and the model performance is evaluated for a number of idealised entrainment scenarios that are typical for shelf seas: entraining in linearly stratified and two-layer fluids caused by (a) surface wind stress (b) bottom stress due to water motion driven by a barotropic pressure gradient (c) bottom jet.

TL;DR: In this paper, four different algebraic second-moment turbulence closure models are investigated in detail, and their performance in terms of Prandtl number, Monin-Obukhov similarity theory, and length scale ratios are first tested against data for simple flows.

TL;DR: In this article, the hydrodynamic control of the turbidity zone by the combined effect of the salt wedge and tidal movements is studied by means of a numerical model of an idealized flat bottom estuary.

TL;DR: In the transition area between the North Sea and the Baltic Sea entrainment processes dominate the vertical mixing in the inflowing saline bottom water as mentioned in this paper, and the hot spots of these processes are located at the Darss Sill and the Bornholm Channel in the western Baltic Sea.