TY - JOUR

T1 - GWK+: Erweiterung des Großen Wellenkanals

T2 - Analyse des Einlaufbereichs

AU - Welzel, Kim Mario

AU - Schendel, Alexander

AU - Goseberg, Nils René

N1 - Publisher Copyright: © 2021, Ernst und Sohn. All rights reserved.

PY - 2021/8

Y1 - 2021/8

N2 - The necessary expansion of maritime renewable energies requires the detailed investigation of structural load limits and potential environmental impacts of offshore structures. Large-scale test facilities play an important role in this context, as they provide the rare opportunity to investigate offshore struc-tures in large scale under realistic conditions. Of particular importance for the design of offshore structures is a realistic representation of the complex superposition of waves and currents, which is currently only possible in a few large-scale test facilities. With the extension of the large wave flume (GWK) in Hannover to the GWK+, the first test facility of this kind in Germany will be available from 2022. The design and construction of an additional current inlet into a wave channel represents a major technical challenge. The design of the current inlet must ensure that flow conditions similar to those in nature can be reproduced in the study area of the wave channel. As an essential flow component, this paper will therefore describe the development of the current inlet into the extended GWK from the design stage to further optimization by means of a 1:10 model created specifically for this purpose. Insights into the implementation, the flow-related challenges as well as the optimization of the current inlet into the wave flume by means of guiding walls and adjustable guiding vanes, and the general suitability for the approximation of the vertical velocity profile as a 1/15 law are presented.

AB - The necessary expansion of maritime renewable energies requires the detailed investigation of structural load limits and potential environmental impacts of offshore structures. Large-scale test facilities play an important role in this context, as they provide the rare opportunity to investigate offshore struc-tures in large scale under realistic conditions. Of particular importance for the design of offshore structures is a realistic representation of the complex superposition of waves and currents, which is currently only possible in a few large-scale test facilities. With the extension of the large wave flume (GWK) in Hannover to the GWK+, the first test facility of this kind in Germany will be available from 2022. The design and construction of an additional current inlet into a wave channel represents a major technical challenge. The design of the current inlet must ensure that flow conditions similar to those in nature can be reproduced in the study area of the wave channel. As an essential flow component, this paper will therefore describe the development of the current inlet into the extended GWK from the design stage to further optimization by means of a 1:10 model created specifically for this purpose. Insights into the implementation, the flow-related challenges as well as the optimization of the current inlet into the wave flume by means of guiding walls and adjustable guiding vanes, and the general suitability for the approximation of the vertical velocity profile as a 1/15 law are presented.

KW - large wave flume

KW - offshore-wind

KW - maritime renewable energies

KW - current flow inlet

KW - wave-current-interaction

KW - Großer Wellenkanal

KW - Offshore-Wind

KW - maritime erneuerbare Energien

KW - Strömung

KW - Welle-Strömung-Kombination

KW - offshore-wind

KW - maritime renewable energies

KW - current flow inlet

KW - large wave flume

KW - wave-current-interaction

KW - Hydraulic engineering/Dams

KW - Offshore engineering

KW - fluid mechanics

UR - http://www.scopus.com/inward/record.url?scp=85111388580&partnerID=8YFLogxK

U2 - 10.1002/bate.202100042

DO - 10.1002/bate.202100042

M3 - Artikel

VL - 98

SP - 541

EP - 551

JO - Bautechnik

JF - Bautechnik

SN - 0340-5044

IS - 8

ER -