%0 Conference Paper %1 kim2016effects %A Kim, Yusik %A Jost, Eva %A Bangga, Galih %A Weihing, Pascal %A Lutz, Thorsten %B Wind, wakes, turbulence and wind farms Oral presentations %C Bristol %D 2016 %I IOP Science %K %N 753, B %P 032047 %R 10.1088/1742-6596/753/3/032047 %T Effects of ambient turbulence on the near wake of a wind turbine %X Developments of the near wake behind the Avatar research turbine (radius of 102.88 m) in ambient turbulence are investigated using high fidelity numerical simulations. A moderate level of background turbulence with a wide range of scales, which has not been considered in the previous studies is applied. With ambient turbulence, a significant impact on the near wake development is observed. The mean velocity profile becomes Gaussian after 450 m distance downstream, which is a demarcation between the near and the far wake. From the spectral analysis of the wake, clear peaks in the spectra are observed at the blade passing frequency, but the distributions of the peak extend into a wide range of frequency domain. Such aspects provide useful information in classifying periodic and stochastic fluctuations, and their contributions to the momentum mixing in the wake.

@inproceedings{kim2016effects, abstract = {Developments of the near wake behind the Avatar research turbine (radius of 102.88 m) in ambient turbulence are investigated using high fidelity numerical simulations. A moderate level of background turbulence with a wide range of scales, which has not been considered in the previous studies is applied. With ambient turbulence, a significant impact on the near wake development is observed. The mean velocity profile becomes Gaussian after 450 m distance downstream, which is a demarcation between the near and the far wake. From the spectral analysis of the wake, clear peaks in the spectra are observed at the blade passing frequency, but the distributions of the peak extend into a wide range of frequency domain. Such aspects provide useful information in classifying periodic and stochastic fluctuations, and their contributions to the momentum mixing in the wake.}, added-at = {2023-08-31T16:43:47.000+0200}, address = {Bristol}, author = {Kim, Yusik and Jost, Eva and Bangga, Galih and Weihing, Pascal and Lutz, Thorsten}, biburl = {https://puma.ub.uni-stuttgart.de/bibtex/2a6d156935a87248c2e0836e3d21db461/puma-wartung}, booktitle = {Wind, wakes, turbulence and wind farms Oral presentations}, doi = {10.1088/1742-6596/753/3/032047}, eventdate = {2016-10-05/2016-10-07}, eventtitle = {The Science of Making Torque from Wind (TORQUE 2016)}, interhash = {b814d01aabfd58cd0b0ebd1c9c461da8}, intrahash = {a6d156935a87248c2e0836e3d21db461}, keywords = {}, language = {eng}, number = {753, B}, pages = 032047, publisher = {IOP Science}, series = {Journal of Physics. Conference Series}, timestamp = {2023-08-31T14:43:47.000+0200}, title = {Effects of ambient turbulence on the near wake of a wind turbine}, venue = {Munich, Germany}, year = 2016 }