Spectral analysis of simulated wind records including time-varying means and gusts

AuthorEstoque, Alfredo Fucoy
Call NumberAIT Thesis no. 195
Subject(s)Wind-pressure
Structural dynamics
NoteA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering of the Asian Institute of Technology, Bangkok, Thailand
PublisherAsian Institute of Technology
AbstractThe general nature of wind is discussed briefly. Pseudo wind records, with time-varying means and including gust effects, a regenerated on a digital computer to simulate actual wind records as realistically as possible. This study is an extension of the thesis by RAMIENTOS (1967) who used a constant mean velocity, with out gust effects, in the simulation procedure. Portions of actual velocity and yaw records of a hurricane are available, for three different elevations during four different periods of the storm, for comparison with the simulated records. Parameters used in the generation of pseudo wind records are: mean velocity and yaw, velocity and yaw fluctuations in independent zones, frequency of velocity fluctuations, and a power-law velocity profile. The kinetic energy, autocorrelation functions and energy spectrum for both actual and pseudo winds are compared. It was found that the energy build-up of the simulated wind with a parabolic time-varying mean velocity compares more favorably with the energy build-up of the actual wind than the simulated wind with a linear time-varying mean. Gusts can also be simulated fairly well with the aid of random numbers.
Year1968
TypeThesis
SchoolStudent Research Before 1980
DepartmentOther Field of Studies (No Department)
Academic Program/FoSThesis (Year <=1979)
Chairperson(s)Chiu, Arthur N.L.
DegreeThesis (M. Eng.) - Asian Institute of Technology, 1968


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