SDM-WindPoS in a nutshell

tke surfaces as wake signature in 12 mills farm demoThe computation of the wind at small scale and the estimation of its uncertainties is of particular importance for applications such as wind energy resource estimation.

To this aim, we develop a new numerical method based on the combination of an coarse prediction (based on Numerical Weather Prediction model) or statistical wind behaviors  (based on measurement campaign and local observations)  and a Lagrangian Stochastic Model, adopting a  fully Lagrangian viewpoint for the turbulent flow modeling  in  the atmospheric boundary layer in order to refine the simulation in the computational domain.


SDM-WindPoS is a model for the simulation of wind in the atmospheric boundary layer.
SDM-WindPoS uses a Lagrangian approach to solve the dynamical equations of the wind. Based on a turbulent-fluid-particle model description, SDM-WindPoS  is an advantageous alternative for some application domains, such as dynamical downscaling simulations and wind farm simulations.


SDM-WindPoS is currently made of several blocks:

  • Its numerical kernel, SDM-kernel. The stochastic downscaling method (SDM) adopts the viewpoint of a fluid-particle dynamics in a flow. Such numerical methods are computationally inexpensive when one need to refine the spatial scale. This is a main advantage of the SDM approach, as fluid-particles methods are free of numerical constraints. SDM involves various simulation techniques whose combination is totally new (such as Poisson solvers, optimal transportation mass algorithm, original Euler scheme for confined Langevin stochastic processes, and stochastic particle methods).  Turbulence modeling inside SDM follows the main framework of fluid particle modeling in turbulence.
  • WindPoS-LAM, the package for the simulation of wind mills (LAM holds for Lagrangian Actuator Model). This package performs a Lagrangian computation of the classical actuator disk (AD) method (non rotating, rotating, BEM like), according to the spacial discretization situation (size of the farm, single wind turbine and wind tunnel case).
  • WindPoS-ATMOS, is a library that contains the specific computational models  used in SDM for simulations in the atmospheric boundary layer.
  • SDM-Modeler,  the dedicated SDM graphic user interface for the pre- and post-processing of SDM simulations and its specialized libraries. Modeler helps to configure the execution of a simulation, and assist in its configuration. It allows to visualize, compare, the 3D views of all SDM  simulation outputs, including the interaction rendering with the wind turbines of the LAM part.
    Modeler also visualizes and imports WRF weather  forecast data and topographic data, to extract initial and boundary conditions for a finer mesh simulation.

Summary of past and current projects

AVENTAGE (started in 2021): is a  Collaboration with SportRizer and RiskWeatherTech towards a very high resolution wind forecast chain on the sailing basin of Marseilles. The genesis of this project was motivated by the next Paris 2024 Olympic Games, where the sailing events will take place in the Marseilles sailing basin. The reading of the wind is one of the major stakes in the search for performance for the sailing Olympics. However, the exhaustive knowledge of the wind of a body of water is not yet resolved. This research project aims to complete the knowledge database of the different local effects in the Marseilles sailing basin, thus facilitating the exploitation of the water body.

See more on AVENTAGE

OCEAPOS (2016-2019): Recent studies have identified potential in many coastal areas which could provide significant renewable energy resources in the near future. In collaboration with the Marine Energy Research and Innovation Centre (MERIC), we develop the numerical model OceaPoS, useful to carry out a comprehensive description of turbulent flow patterns past Marine Current Energy Converters (MCEC) and forward optimize the turbine arrays configurations and evaluate their environmental effects. OceaPos follows the same methodology than SDM–WindPoS model to the tidal and oceanic boundary layer. We also introduce a  new Lagrangian version of actuator discs to take account of one or several MCEC’s devices and their effects on the flow dynamics.

See more on OCEAPOS


WINDPOS (2012 – 2015): Collaboration with colleagues in Chile Foundation Inria Chile (in Santiago) for the simulation of wind in the vicinity of a wind turbine and wind farm. This project was supported by CORFO.

See more on WINDPOS


MODEOL (2012 – 2015): Collaboration with LMD/IPSL and the company MAIA EOLIS, for the simulation of wind power production and wind potential, supported by the french agency for environment ADEME.

See more on Modeol


SDM log (2008 – 2010): The consortium implemented an atmospheric boundary layer model. The partners were the same Inria teams, LMD and the CETE (Department from the Minister of Ecology and Transport, now called CEREMA). This project was supported by the french agency for environment ADEME.

SDM (2005 – 2007): Inria (Moise and Tosca teams) and LMD (Laboratoire de Météorologie Dynamique) released the first version of SDM, which was meant to be compared with MM5 MWP model. This project was supported by the french agency for environment ADEME.

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