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CFDWind1.1

Submitted by Roberto A. Chav... on May 27, 2015 - 12:00am
Main hypothesis

This model is formulated with the assumptions of isotropic eddy-viscosity turbulence and the k-ε two-equation closure scheme modified for atmospheric flows.

CFDWind1 deals with surface boundary layer (SBL) by imposing a set of coefficients as well as proper modifications to the boundary conditions (inlet boundary and wall functions) in order to comply with the Monin-Obukhov Similarity Theory (MOST) as proposed by Richards & Hoxey (1993) and Parente et al. (2011). 

Software
Solver
OpenFOAM-2.1.1 & OpenFOAM-2.4.0
License
Regime
Turbulence
Turbulence closure
Turbulence model

k-ε modified for atmospheric flows (Richards & Hoxey 1993).

Atmospheric boundary layer
Range
Coriolis
No
Atmospheric Stability
Atmospheric Stability
No
Canopy
Forest canopy
Yes
Canopy model
Source/sink terms in the momentum and turbulence-closure equations as developed by Sogachev & Panferov (2006) and Sogachev (2009).
Wind farm
Wind turbine
Yes
Rotor model
Wake model
Wind farm range
References
  • Parente A, Gorlé C, van Beeck J and Benocci C 2011 Improved k–ε model and wall function formulation for the RANS simulation of ABL flows. J. Wind Eng. Ind. Aerodyn. 99 267–278 ISSN 01676105
  • Richards P and Hoxey R . 1993 Appropriate boundary conditions for computational wind engineering models using k-Epsilon turbulence model. J. Wind Eng. Ind. Aerodyn. 46 & 47 145–53
  • Sogachev A and Panferov O. 2006. Modification of two-equation models to account for plant drag. Bound.-Lay. Meteorol. 121:229–266
  • Sogachev A. 2009. A Note on Two-Equation Closure Modelling of Canopy Flow. Bound.-Lay. Meteorol, 130(3), 423–435