# 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…

## 23 Citations

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

- Physics, Environmental Science
- 2002

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…

### LES-Langevin Approach for Turbulent Channel Flow

- Physics, Environmental Science
- 2011

The LES-Langevin model was studied on turbulent channel flows. The approach is based on the dynamics of the subgrid velocity scales previously studied in the frame of Rapid Distortion Theory. The…

### Field study of the dynamics and modelling of subgrid-scale turbulence in a stable atmospheric surface layer over a glacier

- Environmental ScienceJournal of Fluid Mechanics
- 2010

A field experiment – the Snow Horizontal Array Turbulence Study (SnoHATS) – has been performed over an extensive glacier in Switzerland in order to study small-scale turbulence in the stable…

### On subgrid-scale physics in the convective atmospheric surface layer

- Environmental Science, Physics
- 2015

The dynamics of the subgrid-scale (SGS) stress and scalar flux in the convective atmospheric surface layer are studied using field measurements from the Advection Horizontal Array Turbulence Study…

### Fast numerical simulations of 2D turbulence using a dynamic model for subfilter motions

- Physics, Environmental Science
- 2004

### Direct modelling of subgrid scales of turbulence in large eddy simulations

- Environmental Science
- 2002

Subgrid scale (SGS) models for large eddy simulations of turbulent flows fall into two general categories. One category consists of the models that provide expressions for the SGS terms such as a…

### A dynamic subfilter-scale model for plane parallel flows

- Physics
- 2001

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…

### Effect of Turbulence Models and Spatial Resolution on Resolved Velocity Structure and Momentum Fluxes in Large-Eddy Simulations of Neutral Boundary Layer Flow

- Environmental Science, Physics
- 2009

Abstract This paper demonstrates the importance of high-quality subfilter-scale turbulence models in large-eddy simulations by evaluating the resolved-scale flow features that result from various…

### Explicit Filtering and Reconstruction Turbulence Modeling for Large-Eddy Simulation of Neutral Boundary Layer Flow

- Physics, Environmental Science
- 2005

Abstract Standard turbulence closures for large-eddy simulations of atmospheric flow based on finite-difference or finite-volume codes use eddy-viscosity models and hence ignore the contribution of…

### EXPLICIT FILTERING AND RECONSTRUCTION TURBULENCE MODELING FOR LARGE-EDDY SIMULATIONS OF FIELD-SCALE FLOWS

- Environmental Science
- 2004

Large-eddy simulation (LES) has become a widely-used method for computation of field-scale environmental flows; however, challenges remain in determining the optimal turbulence closure method.…

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