FLORIS Wake Modeling Utility

For technical questions regarding FLORIS usage please first search for or post your questions to stackoverflow using the floris tag. Alternatively, email the NREL FLORIS team at NREL.Floris@nrel.gov.

Background and Objectives

This FLORIS framework is designed to provide a computationally inexpensive, controls-oriented modeling tool of the steady-state wake characteristics in a wind farm. The wake models implemented in this version of FLORIS are:

  • Jensen model for velocity deficit

  • Jimenez model for wake deflection

  • Multi zone model for velocity deficit

  • Gaussian models for wake deflection and velocity deficit

  • Gauss-Curl-Hybrid (GCH) model for second-order wake steering effects

  • Curl model for wake deflection and velocity deficit

Further, all wake models can now be overlayed onto spatially heterogenous inflows. More information on all models can be found in Theory Reference.

FLORIS further includes a suite of design and analysis tools useful in wind farm control and co-designed layout optimization. Examples include:

  • Methods for optimization and design of wind farm control and layout

  • Visualization methods for flow analysis

  • Methods for wind rose and annual energy production analysis

  • Methods for analysis of field campaigns of wind farm control

  • Coupling methods to other tools, including SOWFA and CC-Blade

  • Methods to model heterogenous atmospheric conditions

Example applications of these tools are provided in the examples/ folder, and it is highly recommended that new users begin with those in examples/_getting_started.

See [1] for practical information on using floris as a modeling and simulation tool for controls research.

References:

1

J. Annoni, P. Fleming, A. Scholbrock, J. Roadman, S. Dana, C. Adcock, F. Porte-Agel, S. Raach, F. Haizmann, and D. Schlipf. Analysis of control-oriented wake modeling tools using lidar field results. Wind Energy Science, 3(2):819–831, 2018. URL: https://www.wind-energ-sci.net/3/819/2018/, doi:10.5194/wes-3-819-2018.

Citation

https://zenodo.org/badge/178914781.svg

If FLORIS played a role in your research, please cite it. This software can be cited as:

FLORIS. Version 2.1.1 (2020). Available at https://github.com/NREL/floris.

For LaTeX users:

@misc{FLORIS_2020,
author = {NREL},
title = {{FLORIS. Version 2.1.1}},
year = {2020},
publisher = {GitHub},
journal = {GitHub repository},
url = {https://github.com/NREL/floris}
}

License

Copyright 2020 NREL

Licensed under the Apache License, Version 2.0 (the “License”); you may not use this file except in compliance with the License. You may obtain a copy of the License at

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.