A New Dynamical Subgrid Model for the Planetary Surface Layer. Part I: The Model and A Priori Tests

@article{Dubrulle2002AND,
  title={A New Dynamical Subgrid Model for the Planetary Surface Layer. Part I: The Model and A Priori Tests},
  author={B{\'e}reng{\`e}re Dubrulle and Jean-Philippe Laval and Peter P. Sullivan and Joseph Werne},
  journal={Journal of the Atmospheric Sciences},
  year={2002},
  volume={59},
  pages={861-876}
}
A new dynamical subgrid model for turbulent flow in the surface layer of the planetary boundary layer is presented. In this formulation, the flow is decomposed into small (subgrid) and large (resolved) scales in the spirit of large-eddy simulation. The subgrid model, however, is derived directly from the governing equations and involves no adjustable parameters. The evolution of the small scales is not postulated, but computed as a function of the large scales using a semiclassical method… 

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References

SHOWING 1-10 OF 45 REFERENCES

A New Dynamical Subgrid Model for the Planetary Surface Layer. Part II: Analytical Computation of Fluxes, Mean Profiles, and Variances

A new dynamical subgrid model for turbulent flow is used to derive the structure of the heat and momentum fluxes, mean wind and temperature profiles, and temperature and velocity variances, as a

A subgrid-scale model for large-eddy simulation of planetary boundary-layer flows

A long-standing problem in large-eddy simulations (LES) of the planetary boundary layer (PBL) is that the mean wind and temperature profiles differ from the Monin-Obukhov similarity forms in the

A subgrid-scale model based on the estimation of unresolved scales of turbulence

A new method for large eddy simulations is described and evaluated. In the proposed method the primary modeled quantity is the unfiltered velocity field appearing in the definition of the

Scale-Invariance and Turbulence Models for Large-Eddy Simulation

▪ Abstract Relationships between small and large scales of motion in turbulent flows are of much interest in large-eddy simulation of turbulence, in which small scales are not explicitly resolved and

A grid nesting method for large-eddy simulation of planetary boundary-layer flows

A method for performing nested grid calculations with a large-eddy simulation code is described. A common numerical method is used for all meshes, and the grid architecture consists of a single outer

Spectral analysis of large-eddy simulations of the convective boundary layer

Abstract To examine the fidelity of the simulated turbulent flow, we analyzed the spectra of 96×&96×96 large-eddy-simulation results. We derived expressions for the inertial-range spectra of a

A dynamic subfilter-scale model for plane parallel flows

We present a dynamic model of the subfiltered scales in plane parallel geometry using a generalized, stochastic rapid distortion theory ~RDT!. This new model provides expressions for the turbulent

Experimental Study of the Subgrid-Scale Stresses in the Atmospheric Surface Layer

In a large eddy simulation of the atmospheric boundary layer, results near the surface suffer from major deficiencies of the subgrid-scale (SGS) model due to inherently insufficient resolution there.

Coherent structure of the convective boundary layer derived from large-eddy simulations

Turbulence in the convective boundary layer (CBL) uniformly heated from below and topped by a layer of uniformly stratified fluid is investigated for zero mean horizontal flow using large-eddy