Show simple item record

dc.creatorOrwig, Kirsten
dc.date.accessioned2016-02-23T16:05:39Z
dc.date.available2016-02-23T16:05:39Z
dc.date.issued2010-05
dc.identifier.urihttp://hdl.handle.net/2346/66786
dc.description.abstractEngineers commonly use numerical and laboratory models to represent the wind and evaluate its impacts on structures. There are some key assumptions incorporated into these models including neutral stability and stationarity. The implication of these assumptions is that the turbulence characteristics of the wind are the same given a common surface roughness. The Synoptic Wind And Thunderstorm Hurricane (SWATH) field experiment was conducted to collect high temporal and spatial resolution data from various strong wind events to evaluate the adequacy of these fundamental assumptions. The four events discussed in this study included a thunderstorm out ow, a pre-frontal environment, a strong surface low, and a hurricane. The data from these events were analyzed utilizing the Hilbert-Huang Transform in a time-dependent framework. Traditional turbulence statistics and commonly used empirical models were evaluated and modified. The results suggested that despite having similar surface roughness, the events were unique, and that the empirical models generally did not agree with the observed cases. The Hilbert-Huang Transform provided a way to develop a time-varying mean, but also exhibited difficulty handling intermittency within the time history.en_US
dc.format.mimetypeapplication/pdf
dc.language.isoeng
dc.subjectSynoptic wind and thunderstorm hurricane field experiment
dc.subjectThunderstorms
dc.subjectHurricane
dc.subjectTurbulence statistics
dc.titleExamining strong winds from a time-varying perspectiveen_US
dc.typeDissertation
thesis.degree.nameDoctor of Philosophy
thesis.degree.levelDoctoral
thesis.degree.disciplineWind Science and Engineering
thesis.degree.grantorTexas Tech University
thesis.degree.departmentWind Science and Engineering
dc.contributor.committeeMemberSmith, Douglas A.
dc.contributor.committeeMemberGilliam, Kathleen
dc.contributor.committeeMemberPeterson, Richard E.
dc.contributor.committeeChairSchroeder, John L.
dc.rights.availabilityUnrestricted.


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record