On Internal Waves in a Density-Stratified Estuary

In this article some field observations, made in recent years, of internal wave motions in a density-stratified estuary are presented, In order to facilitate the appreciation of the results, and to make some quantitative comparisons, the relevant theory is also summarized. Furthermore, the origins of stratification in estuaries is briefly...

Internal lee waves in a turbulent two-layer flow

A k-Model for Stably Stratified Nearly Horizontal Turbulent Flows

A k-model is formulated that consists of the turbulent kinetic energy equation and an algebraic expression for the mixing length taking into account the influence of stratification. Applicability of the model is restricted to shallow, nearly horizontal flows. For local-equilibrium flows the model reduces to the well-known mixing-length...

Lake destratification induced by local air injection

Mathematical and physical modelling makes possible quantitative predictions regarding the destratification process brought about by the local injection of air at the bottom of a thermally stratified lake or reservoir. The mathematical model developed distinguishes between a near field and a far field. Mixing of epilimnion water and hypolimnion...

On the destratification of lakes and reservoirs using bubble columns

The aim of this research project was (i) to obtain an understanding of the destratification process caused by the local injection of air at the bottom of a thermally stratified lake or reservoir, and (ii) to make possible quantitative predictions of the rate of destratification in a given situation. To this end a mathematical model was set up,...