The fractal turbulent–non-turbulent  interface in the atmosphere

Neuhaus, Lars; Wächter, Matthias; Peinke, Joachim

doi:https://doi.org/10.5194/wes-9-439-2024

Articles | Volume 9, issue 2

https://doi.org/10.5194/wes-9-439-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/wes-9-439-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 9, issue 2

Research article

|

22 Feb 2024

Research article |

| 22 Feb 2024

The fractal turbulent–non-turbulent interface in the atmosphere

Lars Neuhaus, Matthias Wächter, and Joachim Peinke

Data sets

Wind - lidar wind profiles measured at North Sea wind farm TenneT platforms 1 second raw data S. Knoop https://dataplatform.knmi.nl/dataset/windlidar-nz-wp-platform-1s-1

Wind - lidar data from ZephIR 300M (unit ZX973) during Cabauw campaign 2018-2020 (raw data) S. Knoop https://dataplatform.knmi.nl/dataset/windlidar-cabauw-zephir300m-zx973-1s-1

Wind - lidar data from ZephIR 300M (unit ZP738) during Cabauw campaign 2018-2020 (raw data) S. Knoop https://dataplatform.knmi.nl/dataset/windlidar-cabauw-zephir300m-zp738-1s-1

Short summary

Future wind turbines reach unprecedented heights and are affected by wind conditions that have not yet been studied in detail. With increasing height, a transition to laminar conditions with a turbulent–non-turbulent interface (TNTI) becomes more likely. In this paper, the presence and fractality of this TNTI in the atmosphere are studied. Typical fractalities known from ideal laboratory and numerical studies and a frequent occurrence of the TNTI at heights of multi-megawatt turbines are found.