منابع مشابه
2DV Nonlinear k-ε Turbulence Modeling of Stratified Flows
The commonly used linear k-ε turbulence model is shown to be incapable of accurate prediction of turbulent flows, where non-isotropy is dominant. Two examples of non-isotropic flows, which have a wide range of applications in marine waters, are saline water flow and the stratified flows due to temperature gradients. These relate to stratification and consequently, variation of density through...
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A mathematical model for turbulent mixing of stratified, sheared flows is developed and explored. Two applications are emphasized, one to the dynamics of the ocean well–mixed layer, and another to the analysis of the stability of equilibrium profiles away from boundaries.
متن کاملAsymptotic Stability of Unsteady Inviscid Stratified Flows
The stability of modulated atmospheric flows is analyzed. The equations govern. ing the disturbance motion are solved by Galerkin expansions with time-dependent coefficients. Asymptotic stability bounds are then established by constructing Liapuno"\ functions for the resulting differential systems.
متن کاملStratified Integrals and Unknots in Inviscid Flows
We prove that any steady solution to the Cω Euler equations on a Riemannian S3 must possess a periodic orbit bounding an embedded disc. One key ingredient is an extension of Fomenko’s work on the topology of integrable Hamiltonian systems to a degenerate case involving stratified integrals. The result on the Euler equations follows from this when combined with some contact-topological perspecti...
متن کاملHydraulic control of stratified exchange flows
Continuously stratified exchange flows occur in channels connecting stratified reservoirs and between homogeneous basins when interfacial mixing is significant. Hydraulic control is difficult to evaluate under these conditions. Solutions of the sixth order stability equation applied to data from a numerical simulation are used to demonstrate that internal waves cannot carry interfacial informat...
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ژورنال
عنوان ژورنال: Journal of Applied Mechanics
سال: 1980
ISSN: 0021-8936,1528-9036
DOI: 10.1115/1.3153837