Preprints
https://doi.org/10.5194/gmd-2023-174
https://doi.org/10.5194/gmd-2023-174
Submitted as: development and technical paper
 | 
21 Aug 2023
Submitted as: development and technical paper |  | 21 Aug 2023
Status: this preprint was under review for the journal GMD but the revision was not accepted.

Inclusion of the subgrid wake effect between turbines in the wind farm parameterization of WRF

Wei Liu, Xuefeng Yang, Shengli Chen, Shaokun Deng, Peining Yu, and Jiuxing Xing

Abstract. Wind farms, as an important renewable energy source to combat climate change, have had explosive development in recent years. Assessing impacts of wind farms on atmospheric and marine environments requires an accurate parameterization of wind farms in atmospheric models. The current wind farm parameterization scheme (Fitch et al. 2012) in WRF plays an important role in the study of impacts of wind farms. The scheme, however, has some shortfalls, e.g., does not consider the wind wake behind turbines inside a grid cell. In this research, the Fitch scheme in WRF is modified by inclusion of the wake effect of wind turbines. Based on an engineering wake model of a turbine, a wake superposition coefficient and an angle correction coefficient are proposed. A solution model for the inflow wind speed is established to obtain the angle correction coefficient. Other coefficients in the engineering wake model are calculated based on the CFD results. These coefficients are added in the WRF to improve the wind farm parameterization, and sensitivity experiments are conducted. Model results show that the new improved scheme significantly increases wind energy, output power and turbulent kinetic energy in the wind farm area compared with the original scheme. Sensitivity experiments also reveal that, with enlarged model grid size and shortened turbine spacing, the subgrid wake effect becomes more significant, and the new scheme shows more advantages.

Publisher's note: Copernicus Publications remains neutral with regard to jurisdictional claims made in the text, published maps, institutional affiliations, or any other geographical representation in this preprint. The responsibility to include appropriate place names lies with the authors.
Wei Liu, Xuefeng Yang, Shengli Chen, Shaokun Deng, Peining Yu, and Jiuxing Xing

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on gmd-2023-174', Anonymous Referee #1, 18 Sep 2023
    • AC1: 'Reply on RC1', Chen Shengli, 13 Dec 2023
  • RC2: 'Comment on gmd-2023-174', Anonymous Referee #2, 16 Nov 2023
    • AC2: 'Reply on RC2', Chen Shengli, 13 Dec 2023

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on gmd-2023-174', Anonymous Referee #1, 18 Sep 2023
    • AC1: 'Reply on RC1', Chen Shengli, 13 Dec 2023
  • RC2: 'Comment on gmd-2023-174', Anonymous Referee #2, 16 Nov 2023
    • AC2: 'Reply on RC2', Chen Shengli, 13 Dec 2023
Wei Liu, Xuefeng Yang, Shengli Chen, Shaokun Deng, Peining Yu, and Jiuxing Xing
Wei Liu, Xuefeng Yang, Shengli Chen, Shaokun Deng, Peining Yu, and Jiuxing Xing

Viewed

Total article views: 465 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
327 105 33 465 20 26
  • HTML: 327
  • PDF: 105
  • XML: 33
  • Total: 465
  • BibTeX: 20
  • EndNote: 26
Views and downloads (calculated since 21 Aug 2023)
Cumulative views and downloads (calculated since 21 Aug 2023)

Viewed (geographical distribution)

Total article views: 445 (including HTML, PDF, and XML) Thereof 445 with geography defined and 0 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 
Latest update: 19 May 2024
Download
Short summary
Assessing environmental impacts of wind farms requires an accurate parameterization of wind farms in atmospheric models, which, in our study, is improved considering the wind turbine wake. Based on an engineering wake model of a turbine, a wake superposition coefficient and an angle correction coefficient are proposed, calculated and added in the model. Sensitivity experiments reveal that, with enlarged grid size and shortened turbine spacing, the new scheme shows more advantages.