A4 Conference proceedings

Fast Numerical Modelling Method for Wind Flow Investigation Based on Depth-Averaged Equations

Open Access publication

Publication Details
Authors: Avramenko Anna, Agafonova Oxana, Sorvari Joonas, Haario Heikki, Avramenko Yury
Publisher: Wit Press
Publication year: 2017
Language: English
Related Journal or Series Information: Wit Transactions on Engineering Sciences
Title of parent publication: WIT Transactions on Engineering Sciences
Volume number: 118
Start page: 21
End page: 29
Number of pages: 9
ISSN: 1746-4471
eISSN: 1743-3533
JUFO-Level of this publication: 1
Open Access: Open Access publication


An important phase of a wind farm design is solving the wind farm layout optimization problem, which consists in optimally positioning the turbines within the wind farm so that the wake effects are minimized and therefore the expected power production maximized. Simulating a wind farm with more than one fully detailed wind turbines and possibly complex terrain geometry requires significant computational power and time. This paper concerns the study of the depth-averaged flow of the wind turbine with a CFD–RANS approach. The complex three-dimensional (3D) geometry need not be modelled or discretized in the pre-processing state: instead, the geometry of the terrain is only described with source terms in the depth-averaged equations, which are then solved in a very simple and fixed two-dimensional (2D) domain. This approach reduces the equations from 3D to 2D and decreases the elapsed time of CFD simulations from hours to minutes. Thus, it is very practicable modelling method in real time optimization work. 2D CFD simulations are compared with full 3D models and experiments. This paper gives an overview on the existing work and discusses the challenges that may be overcome by future research.

Last updated on 2018-19-10 at 07:55