SGS Model for Stably Stratified Flows
Computational modeling of stably stratified, turbulent shear flows
... isotropic model is a poor approximation of the true dissipation ...algebraic model for the dissipation rate of turbulence kinetic energy is ...new model is derived, and it is demonstrated that it ...
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A quasi-normal scale elimination model of turbulence and its application to stably stratified flows
... K− model in a single-column format, where measured verti- cal profiles of wind velocities and potential temperature at 23:00 UTC were used as initial ...the model and the data is very good, in par- ticular ...
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A balanced approach to modelling rotating stably stratified geophysical flows
... In general, if a flow has both a small Froude number (ratio of horizontal vorticity ω h to buoyancy frequency N ) and a small Rossby number (ratio of relative vertical vorticity ζ to background planetary vorticity f ), ...
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Near Wake of a Horizontal Circular Cylinder in Stably Stratified Flows
... linearly stratified flows of finite depth was experimentally investigated by means of flow visualization and measurements of vortex shedding frequencies, at Reynolds numbers ...
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The formation of shear and density layers in stably stratified trubulent flows: linear processes
... More generally, it seems that there is much interesting work still to be done on layering processes in stratified turbulence. As mentioned in the introduction, a variety of theoretical approaches have been ...
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Three Dimensional Numerical Simulation of Stably Stratified Flows over a Two Dimensional Hill
... density stratified layers such as the surface inversion layer that is frequently observed at nighttime, the air density decreases with ...In stably stratified conditions, negative buoyancy forces are ...
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Kinematic simulation for stably stratified and rotating turbulence
... Strongly stratified turbulence can be found inside the oceans, however rapidly rotating turbulence (small Rossby numbers) can only be found at large scales where rotation is spatially ...be flows inside ...
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ANGEO - A heuristic model of three-dimensional spectra of temperature inhomogeneities in the stably stratified atmosphere
... the stably strati®ed atmo- sphere are not locally isotropic ...in stably strati®ed geophysical ¯ows. A heuristic model of a 3D spatial spectrum is proposed in order to describe and study statistical ...
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4. MODELING OF STRATIFIED MIXTURE FLOWS (Heterogeneous flows)
... the model and the force balance is sought for V m value at which V 2 = ...4.2.2.6 Model adaptation to partially-stratified flow The two-layer model can be used as a predictive tool for the ...
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Large-Eddy Simulation of Stably-Stratified Flow Over a Steep Hill
... the SGS coefficients in the eddy-viscosity and eddy-diffusivity models (Germano et ...and model coefficients are optimised at every position and timestep based on information from the resolved scales, with ...
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Energetics and mixing in stratified turbulent flows
... in stratified turbulence compared to the mixing occuring in flows forced by vortical ...numerical model and the setup of our simulations, providing details of the initial condition and body forc- ing ...
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A prototype stochastic parameterization of regime behaviour in the stably stratified atmospheric boundary layer
... of model experiments against observational data, including sys- tematic sensitivity analyses of the free parameters and an im- plementation in a more complex single-column model, will be the subject of a ...
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Unstructured mesh methods for stratified turbulent flows
... global model with the integrated forecasting system (IFS) at ...for stratified flows and different approaches for stratified turbulent flow simulation and modelling are discussed in Section ...
142
On the boundary layer structure of differentially heated cavity flow in a stably stratified porous medium
... a stably stratified environment which tends to inhibit ...mathematical model is considered in which steady two-dimensional motion is generated within a stably stratified porous medium by differential ...
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Stably Stratified Atmospheric Boundary Layers: Event Detection and Classification for Turbulent Time Series
... 1 Introduction The atmospheric boundary layer is the lowest part of the atmosphere where life takes place. For understanding weather patterns affecting human lives a good understanding of the dynamics in this layer is ...
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A statistical-mechanical approach to study the hydrodynamic stability of stably stratified atmospheric boundary layer
... Earlier analyses of the SnoHATS dataset highlighted the existence of four SBL flow regimes (clusters) [12]. This number of clusters to be considered in the FEM-BV-VARX algorithm was selected invoking information criteria ...
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A statistical-mechanical approach to study the hydrodynamic stability of stably stratified atmospheric boundary layer
... DISCUSSION We have built an indicator Υ as that is able to quantify the a dynamical stability of metastable states or fixed points. We have applied it in various systems of increasing complexity, ranging from a simple ...
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UC San Diego International Symposium on Stratified Flows
... of Stratified Turbulence III Chair: Bill Smyth Upper Grande Right 10:20 - 10:40 A multiscale point of view on the dynamics of stably stratified turbulence associated with geostrophic modes: ...
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UC San Diego International Symposium on Stratified Flows
... Figure 1: Model schematic. The computational domain is chosen to have a depth of H=10 m, an along-wave length of L x =260 m and a width of L y =3 m. The pycnocline is centered at a depth of H/7.5 from the top ...
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Daily cycle simulations of thermally stratified flows over forests
... to model the thermally stratified wind field over a forest during full diurnal ...to model the canopy flow using time-dependent input data, obtained from measurements and mesoscale ...
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