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On the possibility of wave-induced chaos in a sheared,stably stratified fluid layer
wave-induced chaos sheared,stably stratified fluid layer
2009/11/16
Shear flow in a stable stratification provides a waveguide for internal gravity waves. In the inviscid approximation, internal gravity waves are known to be unstable below a threshold in Richardson nu...
We present a numerical study of the generation and evolution of a mixed layer in a stably stratified layer of Boussinesq fluid. We use an external forcing in the equation of motion to model the experi...
A centre manifold approach to solitary waves in a sheared,stably stratified fluid layer
centre manifold approach solitary waves stratified fluid layer
2009/11/16
The centre manifold approach is used to derive an approximate equation for nonlinear waves propagating in a sheared, stably stratified fluid layer. The evolution equation matches limiting forms derive...
A theoretical model of a wake of a body towed in a stratified fluid at large Reynolds and Froude numbers
theoretical model stratified fluid large Reynolds Froude numbers
2009/11/9
The objective of the present paper is to develop a theoretical model describing the evolution of a turbulent wake behind a towed sphere in a stably stratified fluid at large Froude and Reynolds number...
Length Scales in a Rotating Stratified Fluid on the Beta Plane
Length Scales Beta Plane Rotating Stratified Fluid
2009/4/2
The relationships between vertical and horizontal length scales in a rotating stratified fluid on the beta plane are discussed in an attempt to unify the results of previous papers. The model is stead...
A Possible Mechanism for Boundary Layer Mixing and Layer Formation in a Stratified Fluid
Possible Mechanism Layer Formation Boundary Layer Mixing Stratified Fluid
2009/3/9
A plate tilted at 42° from the horizontal is oscillated along its length with frequency ω and amplitude a in a linearly stratified fluid (salt water) of kinematic viscosity ν. If the Reynolds number R...
An Experimental Study of Turbulence Behind Towed Biplanar Grids in a Salt-Stratified Fluid
Turbulence Salt-Stratified Fluid Towed Biplanar Grids
2009/2/8
Biplanar gods were towed down a 30 m long tank of stratified water at 10–60 cm s−1. Stratifications from N=0.2 to 0.5 rad s−1 were used. Single electrode conductivity probes repeatedly pro...
On the Nature of Turbulence in a Stratified Fluid. Part II：Application to Lakes
buoyancy flux Stratified Fluid Lakes
2008/12/23
A strong debate has continued for a number of years over the magnitude of the ratio of the buoyancy flux b to the rate of production of turbulent kinetic energy from the mean velocity sheer. This rati...
On the Nature of Turbulence in a Stratified Fluid. Part I：The Energetics of Mixing
turbulent buoyancy flux Stratified Fluid
2008/12/23
The definition of the flux Richardson number Rf is generalized to be the ratio of the turbulent buoyancy flux b to the net turbulent mechanical energy m available from all sources. For mechanically en...
Unsteady, Turbulent Convection into a Rotating, Linearly Stratified Fluid：Modeling Deep Ocean Convection
Linearly Stratified Fluid Deep Ocean Convection
2008/12/12
A laboratory experiment has been constructed to Model the deep convective processes in a stratified ocean driven by the energetic cooling at the ocean surface. For convenience in the laboratory the au...