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Doctoral Thesis
DOI
10.11606/T.3.2008.tde-30092008-144215
Document
Author
Full name
João Vicente Sparano
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2008
Supervisor
Committee
Simos, Alexandre Nicolaos (President)
Aranha, José Augusto Penteado
Cruz, José Jaime da
Ferreira, Marcos Donato Auler da Silva
Sphaier, Sergio Hamilton
Title in Portuguese
Método de estimação de espectro direcional de ondas baseado em movimentos de 1ª ordem de sistemas oceânicos: validação em escala reduzida e verificação em escala real.
Keywords in Portuguese
Estimação espectro direcional
Método Bayesiano
Monitoração escala real
Validação experimental
Abstract in Portuguese
Este texto trata da estimação de espectro direcional de ondas a partir de movimentos de primeira ordem de sistemas oceânicos estacionários utilizando um método de inferência bayesiano. Após descrição do método e discutidas suas principais fontes de incertezas, este foi validado experimentalmente através de ensaios com dois tipos de embarcações para ondas irregulares e mares bimodais, e verificado com dados de monitoração em escala real. Uma comparação preliminar com dados provenientes de um radar próximo ao sistema monitorado também foi feita. Com base nestes resultados, discute-se a eficiência do método e suas limitações.
Title in English
Directional wave spectrum estimation method based on first order motions of offshore systems: model-scale validation and real-scale verification.
Keywords in English
Bayesian method
Directional wave spectrum estimation
Experimental validation
Real scale monitoring
Abstract in English
This text is about estimating directional wave spectra based on first order motions of stationary systems by means of a bayesian inference method. After being described the method and its main sources of uncertainties discussed, an experimental validation was carried out with two different types of hulls for irregular waves and bimodal seas, with a posterior verification using data from a real scale monitoring campaign. Also, a preliminary comparison with data from a radar in the vicinities of the monitored system was made. Based on those results, the methods efficiency is discussed, along with its limitations.
 
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Publishing Date
2008-10-07
 
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