Zobrazeno 1 - 10
of 639
pro vyhledávání: '"E Krämer"'
Publikováno v:
Wind Energy Science, Vol 9, Pp 933-962 (2024)
This study comprehensively investigates the near-wake development of a model wind turbine operating at a low tip-speed ratio in stalled conditions. In the present paper, part 1, different ways of representing the turbine, which include a full geometr
Externí odkaz:
https://doaj.org/article/358362e145ec4ade8023883891cf7182
Publikováno v:
Wind Energy Science, Vol 8, Pp 1369-1385 (2023)
In order to design vortex generators for modern multi-megawatt wind turbines accurately, the 3D behaviour of the boundary layer has to be considered. Due to the rotation of the blade, the lift-enhancing rotational augmentation has a considerable impa
Externí odkaz:
https://doaj.org/article/cac8849b11dd4db28a7aa1bdb90e9ec7
Publikováno v:
Communications Biology, Vol 5, Iss 1, Pp 1-11 (2022)
A combination of experimental and literature analyses indicate that heat stress is a greater threat for coral calcification than ocean acidification, stressing the need for further investigation on key regulatory processes.
Externí odkaz:
https://doaj.org/article/bd2ec4928c754fbea738053e419f47c7
Publikováno v:
Wind Energy Science, Vol 7, Pp 1321-1340 (2022)
The surface pressure fluctuations, which are a source of low-frequency noise emissions, are numerically investigated on a 2 MW wind turbine under different inflow conditions. In order to evaluate the impact of a complex-terrain flow, a computational
Externí odkaz:
https://doaj.org/article/80b26fae867d4c0e96f3b10cb0cc8a18
Publikováno v:
Wind Energy Science, Vol 6, Pp 93-110 (2021)
The aeroelastic response of a 2 MW NM80 turbine with a rotor diameter of 80 m and interaction phenomena are investigated by the use of a high-fidelity model. A time-accurate unsteady fluid–structure interaction (FSI) coupling is used between a comp
Externí odkaz:
https://doaj.org/article/cced7903f1c44f6a9dd0c8301a1efbd9
Publikováno v:
Wind Energy Science, Vol 3, Pp 713-728 (2018)
The low-frequency emissions from a generic 5 MW wind turbine are investigated numerically. In order to regard airborne noise and structure-borne noise simultaneously, a process chain is developed. It considers fluid–structure coupling (FSC) of a
Externí odkaz:
https://doaj.org/article/51a39a9855484e209d3bc54e0aec0fb2
Publikováno v:
Wind Energy Science, Vol 3, Pp 503-531 (2018)
The present study investigates flow dynamics in the hub region of a wind turbine focusing on the influence of nacelle geometry on the root aerodynamics by means of Reynolds averaged Navier–Stokes simulations with the code FLOWer. The turbine con
Externí odkaz:
https://doaj.org/article/b0597951a5164200b0b5b3d5d517ed1d
Autor:
A. C. Klein, S. Bartholomay, D. Marten, T. Lutz, G. Pechlivanoglou, C. N. Nayeri, C. O. Paschereit, E. Krämer
Publikováno v:
Wind Energy Science, Vol 3, Pp 439-460 (2018)
In the present paper, numerical and experimental investigations of a model wind turbine with a diameter of 3.0 m are described. The study has three objectives. The first one is the provision of validation data. The second one is to estimate the in
Externí odkaz:
https://doaj.org/article/86c1be077dfa4b4587ce0ac15f950ba8
Publikováno v:
Health Education & Behavior, 2017 Apr 01. 44(2), 271-277.
Externí odkaz:
https://www.jstor.org/stable/48588553
Publikováno v:
Scientific Reports, Vol 7, Iss 1, Pp 1-15 (2017)
Abstract The potential effects of seasonal acclimatization on coral sensitivity to heat-stress, has received limited attention despite differing bleaching thresholds for summer and winter. In this study, we examined the response of two contrasting ph
Externí odkaz:
https://doaj.org/article/bd8bde4f4c9944d682e5e5403f277596