On the Momentum Fluxes Associated with Mountain Waves in Directionally Sheared Flows

Impact of non-hydrostatic effects and trapped lee waves on mountain wave drag in directionally sheared flow

The orographic gravity wave drag produced in flow over an axisymmetric mountain when both vertical wind shear and non-hydrostatic effects are important was calculated using a semi-analytical two-layer linear model, including unidirectional or directional constant wind shear in a layer near the surface, above which the wind is constant. The drag behaviour is determined by partial wave reflection...

Surface Waves on Vertically Sheared Flows: Approximate Dispersion Relations

Assuming linear wave theory for [1974] for deep water. We then obtain solutions waves riding on a weak current of O(c) compared to to the general problem to 0(1⁄2) (reproducing the the wave phase speed, an approximate dispersion result of Skop [1987]) and to 0(1⁄22). In section 3 relation is developed to 0(1⁄2 2 ) for arbitrary curwe apply the method to linear, cosine, and 1/7rent U(z) in water...

new semigroup compactifications via the enveloping semigroups of associated flows

this thesis deals with the construction of some function algebras whose corresponding semigroup compactification are universal with respect to some properies of their enveloping semigroups. the special properties are of beigan a left zero, a left simple, a group, an inflation of the right zero, and an inflation of the rectangular band.

Boussinesq Waves on Vertically Sheared Currents

Surface Waves on Veritcally Sheared Currents

A new perturbation analysis is presented which provides a first approximation to the wave-current interaction. The model is shown to provide a good description of laboratory data provided by Swan, Cummins & James (2000) and of results from a numerical formulation. These comparisons confirm that the near-surface vorticity leads to an important modification of the dispersion relation. The results...