Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 359-370 |
| Number of pages | 12 |
| Journal | Wind energy |
| Volume | 19 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2 Mar 2016 |
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Keywords
- METIS-310163
- IR-95720
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Effects of turbine spacing on the power output of extended wind-farms. / Stevens, Richard Johannes Antonius Maria; Gayme, Dennice F.; Meneveau, Charles.
In: Wind energy, Vol. 19, No. 2, 02.03.2016, p. 359-370.Research output: Contribution to journal › Article › Academic › peer-review
TY - JOUR
T1 - Effects of turbine spacing on the power output of extended wind-farms
AU - Stevens, Richard Johannes Antonius Maria
AU - Gayme, Dennice F.
AU - Meneveau, Charles
N1 - Early View (Online Version of Record published before inclusion in an issue)
PY - 2016/3/2
Y1 - 2016/3/2
N2 - We present results from large eddy simulations of extended wind-farms for several turbine configurations with a range of different spanwise and streamwise spacing combinations. The results show that for wind-farms arranged in a staggered configuration with spanwise spacings in the range ≈[3.5,8]D, where D is the turbine diameter, the power output in the fully developed regime depends primarily on the geometric mean of the spanwise and streamwise turbine spacings. In contrast, for the aligned configuration the power output in the fully developed regime strongly depends on the streamwise turbine spacing and shows weak dependence on the spanwise spacing. Of interest to the rate of wake recovery, we find that the power output is well correlated with the vertical kinetic energy flux, which is a measure of how much kinetic energy is transferred into the wind-turbine region by the mean flow. A comparison between the aligned and staggered configurations reveals that the vertical kinetic energy flux is more localized along turbine columns for aligned wind-farms than for staggered ones. This additional mixing leads to a relatively fast wake recovery for aligned wind-farms.
AB - We present results from large eddy simulations of extended wind-farms for several turbine configurations with a range of different spanwise and streamwise spacing combinations. The results show that for wind-farms arranged in a staggered configuration with spanwise spacings in the range ≈[3.5,8]D, where D is the turbine diameter, the power output in the fully developed regime depends primarily on the geometric mean of the spanwise and streamwise turbine spacings. In contrast, for the aligned configuration the power output in the fully developed regime strongly depends on the streamwise turbine spacing and shows weak dependence on the spanwise spacing. Of interest to the rate of wake recovery, we find that the power output is well correlated with the vertical kinetic energy flux, which is a measure of how much kinetic energy is transferred into the wind-turbine region by the mean flow. A comparison between the aligned and staggered configurations reveals that the vertical kinetic energy flux is more localized along turbine columns for aligned wind-farms than for staggered ones. This additional mixing leads to a relatively fast wake recovery for aligned wind-farms.
KW - METIS-310163
KW - IR-95720
U2 - 10.1002/we.1835
DO - 10.1002/we.1835
M3 - Article
VL - 19
SP - 359
EP - 370
JO - Wind energy
JF - Wind energy
SN - 1095-4244
IS - 2
ER -