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The purpose of the this project is to use detailed CFD models for fast wind flow calculations.

The project has been carried out by Klaus Vogstad, Vaibhav Bhutoria, John Amund Lund and Petter Furrebøe at Agder Energi (now Meventus); Yngve Heggelund and Inge Morten Skaar at Christian Michelsen Research; Stefan Ivanell and Bahri Uzunoglu at Høgskolan pa Gotland and Sergio Ferraris, OpenCFD within the Vindforsk-III programme under the project V-366 ”Instant Wind”


Description

Visualisation video

Visualise

CFD Models

In total 13 WindSim simulations were run with different positions for the back turbine tile 2. In the plots that follow the same numbering for comparison with CFD simulations is used.

The grid size for each of the simulations was varied and used an unstructured grid.

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Transverse Tile Movement: 7 CFD cases were run for the tile 2 movement in Y/transverse direction.

Longitudinal Tile Movement: 5 CFD cases were run for the tile 2 movement in X/longitudinal direction.

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Code

The model coupling technique is intended for integration in tools for visualisation and layout optimisation, and is implemented in the Matlab code. An example application of a web-based simulation demonstrates the potential use of the model reduction technique for interactive visualisation.

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The first set of simulations in OpenFoam were performed to i) verify and validate the software capability in transverse tile movement, ii) verify the capability of tile movement in longitudinal direction and, iii) to study ‘elastic limit’


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Documents

The purpose of this project is to make use CFD results for interactive visualisation, layout design and optimisation of wind farms. The more advanced CFD models are only used in academics because they are too computational intensive for practical purposes.

We adopt model reduction techniques on CFD results to enable fast, almost instant wind simulations. A RANS CFD model with three turbines represented by actuator disks was used for our case study.

The model reduction technique implies … generating a set of ”snapshots” from the CFD model as a set of representative solutions. potenti. Proin vulputate sagittis urna, a tempor sapien rutrum eget. Sed sodales

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