Modulating higher-order statistics of turbulent boundary layer wind fields using randomized grid roughness

IF 4.2 2区工程技术 Q1 ENGINEERING, CIVIL Journal of Wind Engineering and Industrial Aerodynamics Pub Date : 2025-03-06 DOI:10.1016/j.jweia.2025.106042

Mariel Ojeda-Tuz , Mohit Chauhan , Pedro Fernández-Cabán , Ryan Catarelli , Michael Shields , Kurtis Gurley

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引用次数: 0

Abstract

Near ground wind velocity observations and wind tunnel measurements have identified height dependent non-Gaussian behavior in longitudinal wind turbulence. The potential sensitivity of bluff body peak pressure loads to non-Gaussian turbulence motivates an investigation to modulate longitudinal skewness in the approach flow through passive mechanical turbulence generation. It is currently an open question as to whether higher-order properties of turbulence can be modulated via roughness element grid. This research leverages outcomes from a recent active machine learning experimental study to modulate turbulence profiles in a boundary layer wind tunnel using an automated roughness grid. Reynolds stress fraction analyses of turbulence data from hundreds of non-homogeneous roughness configurations are related to the observed along wind turbulence skewness profile. The results identify a relationship between roughness element configuration features and resultant skewness profiles, providing insights into modulating higher-order longitudinal turbulence behavior in boundary layer wind simulation.

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来源期刊

Journal of Wind Engineering and Industrial Aerodynamics 工程技术-工程：土木

CiteScore

8.90

自引率

22.90%

发文量

306

审稿时长

4.4 months

期刊介绍： The objective of the journal is to provide a means for the publication and interchange of information, on an international basis, on all those aspects of wind engineering that are included in the activities of the International Association for Wind Engineering http://www.iawe.org/. These are: social and economic impact of wind effects; wind characteristics and structure, local wind environments, wind loads and structural response, diffusion, pollutant dispersion and matter transport, wind effects on building heat loss and ventilation, wind effects on transport systems, aerodynamic aspects of wind energy generation, and codification of wind effects. Papers on these subjects describing full-scale measurements, wind-tunnel simulation studies, computational or theoretical methods are published, as well as papers dealing with the development of techniques and apparatus for wind engineering experiments.