About Task 31
Task 31 began in 2011 and ended in 2021.
The objective of Task 31 is to develop an international wind farm flow modeling and evaluation framework. To this end, a forum for data sharing and model benchmarking has been created for model developers and users to exchange knowledge and best practices on flow modeling for external wind conditions and wind farm wake effects.
This third phase of the Task is devoted to leveraging high-fidelity experiments, from the U.S. Department of Energy Atmosphere to Electrons (A2e) and New European Wind Atlas (NEWA) research initiatives, in the form of collaborative model intercomparison benchmarks around relevant challenges for flow models. The ultimate goal is to quantify the accuracy levels of state-of-the-art models that are used by wind resource assessment methodologies and wind farm design tools. In Phase 3, the Wind Energy Model Evaluation Protocol (WEMEP) will have a strong focus on Open Science by promoting data sharing and standardization to improve traceability and consistency in validation repositories.
The operating agent for Task 31 was Antonio Ugarte (augarte@cener.com)
The chapter for Task 31 in the Annual Report 2021 can be found here
Task 31 Roadmap
The third phase of Task 31 finished in May 2021.
Phase l
• Defining a model evaluation framework for microscale wind farm flow models.
• Verification based on ABL and wake similarity theory.
• Sexbierum, Horns Rev, Lillgrund, Askervein and Bolund benchmarks.
Phase ll
• Extending the scope to mesoscale.
• NEWA and SWiFT high-fidelity experiments.
• GABLS3 benchmark.
Phase lll
• WEMEP open-source framework.
• NEWA and SWiFT benchmarks.
• OWA Wake Modelling Challenge.
• AWAKEN experiment planning.
Wind Energy Model Evaluation Protocol
Open-source documentation on model evaluation procedures, modeling communities and quality-checked verification and validation benchmarks
https://wemep.readthedocs.io/en/latest/index.htmlFrequently Asked Questions
Get answers to our most commonly asked questions about IEA Wind TCP Task 31
How much does it cost to subscribe?
A participation fee of €8333 per year and per country was established to cover the management costs of the Task.
What kind of involvement is expected from a participant?
The Task is very flexible to accommodate different levels of participation. You can simply follow the activities by attending the meetings but, normally, members are also interested in participating in benchmarks by running simulations with in-house or third-party models.
A more significant involvement is required if you become a benchmark manager, since you will have to set up the benchmark guide, generate input/validation data, carry out the assessment based on participant submissions and publish the results. An involvement equivalent to around 1 p-m/year/participant is recommended to provide good traction to the Task.
How are benchmarks organized?
Benchmarks are typically supported and organized within national or European research projects that want to leverage modelling experts from the Wakebench community. A bottom-up approach is typical, where benchmarking opportunities are presented as they become available from partner projects. During Phase 3, these benchmarks have followed the validation strategy established in the New European Wind Atlas (NEWA) project and the U.S. Department of Energy Atmosphere to Electrons (A2e) program.
How long does it take to complete a benchmark?
Benchmarks typically take between 6 and 12 months to complete. This allows modellers to plan their work relatively well in advance and commit to participate in-kind. Final deadlines are typically connected to abstract submission at major conferences.
Where is the benchmark data published?
Windbench.net used to be the place to find benchmark information but we are now adopting a decentralized approach to accommodate better to the publishing policies of each data sponsor.
In the absence of these, the default data repository is Zenodo (https://zenodo.org/communities/wakebench/?page=1&size=20).
The Wind Energy Model Evaluation Protocol (WEMEP, https://wemep.readthedocs.io/en/latest/index.html) provides documentation and links to all the public datasets.
Any Question at
+45 21 90 10 18
IEA Wind TCP Secretariat
Energy Modelling Lab
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1432 Copenhagen K.
Denmark
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Send your mail at
ieawind@energymodellinglab.com