Experimental study on a novel wind gust generator based on an adaptive nozzle design
Publication date
2025-03-14
Document type
Forschungsartikel
Organisational unit
Publisher
Elsevier
Series or journal
Journal of Wind Engineering and Industrial Aerodynamics
ISSN
Periodical volume
261
Article ID
106080
Peer-reviewed
✅
Part of the university bibliography
✅
Language
English
DDC Class
500 Naturwissenschaften
600 Technik
Keyword
Wind gust
Adaptive nozzle
Constant-temperature anemometry
Surface pressure
Abstract
The paper presents a novel design of a wind gust generator based on an adaptive nozzle for wind tunnel applications and its experimental investigation. The key feature of this design is the movable upper wall of the nozzle, which adjusts the cross-section of the nozzle's outlet. For this purpose, the upper contour of the nozzle is connected to a programmable and fast-moving tooth belt axis, enabling rapid changes in the nozzle geometry to generate reproducible horizontal wind gusts that develop along a flat ground plate. The experimental setup primarily relies on particle-image velocimetry as an optical measurement technique, supported by a constant-temperature anemometer and pressure taps at specific locations. The gusts are generated using a well-defined motion pattern of the movable nozzle, following a (1-cos)-type signal. A combination of velocity and surface pressure measurements is carried out, analyzing the gust development at various positions along the ground plate in streamwise direction. Both data sets are used to quantify the adaptive nozzle's potential as an effective tool for wind gust generation, facilitating future studies on highly dynamic fluid-structure interactions under wind gust load. Additionally, the well-designed experiment is planned to serve as a valuable validation case for numerical methods.
Description
This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
Cite as
Wood, J. N., Breuer, M. (2025). Experimental study on a novel wind gust generator based on an adaptive nozzle design. Journal of Wind Engineering and Industrial Aerodynamics, Vol. 261, 2025, 106080. https://doi.org/10.1016/j.jweia.2025.106080
Version
Published version
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