The anomalous results of WRF-WFP

[yxli0323]

Hello, I have recently been attempting to simulate the atmospheric conditions of a wind farm using WRF-WFP. I have set up 133 turbines around 32N 122E, with nested domains at 10km and 2km respectively. However,I have noticed that as the simulation progresses, there is an increasing discrepancy in QKE and wind speed on an hourly basis between experiments with turbines and those without. What could be causing this phenomenon?

Cool tones represent negative values, while warm tones indicate positive values. Are these results normal?

wind (20150701-20150704):（The heavier the color, the greater the difference -0.3-0.3）


QKE:（The heavier the color, the greater the difference，-0.1-0.1）

 

[yxli0323]

2015-07-01+1h

2015-0701+5h

20150701+38h


20150701+82h

 

[Ming Chen]

Your namelist.input looks fine to me except that you may need to turn on the option diff_6th_opt, which can help damping small wave structure.
We don't have many experiences running with the wind farm option, but the following papers may be helpful for you to better understand this option:

Fitch, A. C. et al. 2012: Local and Mesoscale Impacts of Wind Farms as Parameterized in a
Mesoscale NWP Model. Monthly Weather Review, doi:http://dx.doi.org/10.1175/MWR-D-11-00352.1

Fitch, A. C. et al. 2013: Mesoscale Influences of Wind Farms Throughout a Diurnal Cycle.
Monthly Weather Review, doi:http://dx.doi.org/10.1175/MWR-D-12-00185.1

Fitch, A. C. et al. 2013: Parameterization of Wind Farms in Climate Models.
Journal of Climate, doi:http://dx.doi.org/10.1175/JCLI-D-12-00376.1

Jimenez, P.A., J. Navarro, A.M. Palomares and J. Dudhia: Mesoscale modeling of offshore
wind turbines wakes at the wind farm resolving scale: a composite-based analysis with
the WRF model over Horns Rev. Wind Energy, (In Press.). DOI: 10.1002/we.1708