IEA-Task 31 WAKEBENCH: Towards a protocol for wind farm flow model evaluation. Part 1: Flow-over-terrain models

The Science of Making Torque from Wind 2014

Rodrigo, Javier Sanz^1 ; Gancarski, Pawel^1 ; Arroyo, Roberto Chavez^1 ; Moriarty, Patrick^2 ; Chuchfield, Matthew^2 ; Naughton, Jonathan W.^3 ; Hansen, Kurt S.^4 ; MacHefaux, Ewan^4 ; Koblitz, Tilman^4 ; Maguire, Eoghan^5 ; Castellani, Francesco^6 ; Terzi, Ludovico^7 ; Breton, Simon-Philippe^8 ; Ueda, Yuko^9 ; Prospathopoulos, John^10 ; Oxley, Gregory S.^11 ; Peralta, Carlos^12 ; Zhang, Xiadong^13 ; Witha, Björn^14

CENER, National Renewable Energy Centre, United Kingdom^1

NREL National Renewable Energy Laboratory, United States^2

Univeristy of Wyoming, United States^3

DTU-Wind Technical University of Denmark, Denmark^4

Vattenfall, Sweden^5

University of Perugia, Italy^6

Sorgenia Green, Italy^7

Uppsala University, Sweden^8

Wind Energy Institute of Tokyo, Japan

(10) CRES Center for Renewable Energy Sources, Greece

(11) Vestas Wind Systems, Denmark

(12) Fraunhofer IWES, Germany

(13) North China Electric Power University, China

(14) Forwind, Germany^9

关键词: Complex terrains;    Microscale levels;    Model benchmarking;    Monin-Obukhov similarity theory;    Neutral conditions;    Processing procedures;    Validation approach;    Wind resource assessment;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/524/1/012105/pdf
DOI  :  10.1088/1742-6596/524/1/012105

来源: IOP

【 摘 要 】

The IEA Task 31 Wakebench is setting up a framework for the evaluation of wind farm flow models operating at microscale level. The framework consists on a model evaluation protocol integrated on a web-based portal for model benchmarking (www.windbench.net). This paper provides an overview of the building-block validation approach applied to flow-over-terrain models, including best practices for the benchmarking and data processing procedures for the analysis and qualification of validation datasets from wind resource assessment campaigns. A hierarchy of test cases has been proposed for flow-over-terrain model evaluation, from Monin- Obukhov similarity theory for verification of surface-layer properties, to the Leipzig profile for the near-neutral atmospheric boundary layer, to flow over isolated hills (Askervein and Bolund) to flow over mountaneous complex terrain (Alaiz). A summary of results from the first benchmarks are used to illustrate the model evaluation protocol applied to flow-over-terrain modeling in neutral conditions.