Fourier Simulation of a Non-Isotropic Wind Field Model

J. Mann, S. Krenk

    Research output: Book/ReportReportResearchpeer-review

    Abstract

    Realistic modelling of three dimensional wind fields has become important in
    calculation of dynamic loads on same spatially extended structures, such as large
    bridges, towers and wind turbines. For some structures the along wind component of the of the turbulent flow is important while for others the vertical velocity fluctuations give rise to loads. There may even be structures where combinations of velocity fluctuations in different direction are of importance. Most methods that have been developed to simulate the turbulent wind field
    are based on one-point (cross-)spectra and two-point cross-spectra. In this paper a method is described which builds on a recently developed model of a spectral tensor for atmospheric surface layer turbulence at high wind speeds. Although the tensor does not in principle contain more information than the cross-spectra, it leads to a more natural and direct representation of the three dimensional turbulent flow.

    Original languageEnglish
    Place of PublicationAalborg
    PublisherDept. of Building Technology and Structural Engineering, Aalborg University
    Number of pages10
    Publication statusPublished - 1992
    SeriesEngineering Mechanics
    Number12
    VolumeR9248
    ISSN0902-7513

    Bibliographical note

    Also in: Proceedings of the 6th International Conference on Structural Safety and Reliability, ICOSSAR '93, Innsbruck, Austria, 9-13 August, 1993. Paper no. 117/3/27

    Keywords

    • Wind Fields
    • Non-Isotropic Wind Field Models
    • Dynamic Loads
    • Spectral Tensors
    • High Wind Speeds
    • Navier-Stokes Equation
    • Eddy Life Times
    • Tensor Models

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