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research article

Wind data extrapolation and stochastic field statistics estimation via compressive sampling and low rank matrix recovery methods

Pasparakis, George D.
•
dos Santos, Ketson R. M.  
•
Kougioumtzoglou, Ioannis A.
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January 1, 2022
Mechanical Systems And Signal Processing

A methodology based on compressive sampling is developed for incomplete wind time-histories reconstruction and extrapolation in a single spatial dimension, as well as for related stochastic field statistics estimation. This relies on l1-norm minimization in conjunction with an adaptive basis re-weighting scheme. Indicatively, the proposed methodology can be employed for monitoring of wind turbine systems, where the objective relates to either reconstructing incomplete time-histories measured at specific points along the height of a turbine tower, or to extrapolating to other locations in the vertical dimension where sensors and measurement records are not available. Further, the methodology can be used potentially for environmental hazard modeling within the context of performance-based design optimization of structural systems. Unfortunately, a straightforward implementation of the aforementioned approach to account for two spatial dimensions is hindered by significant, even prohibitive in some cases, computational cost. In this regard, to address computational challenges associated with higher-dimensional domains, a methodology based on low rank matrices and nuclear norm minimization is developed next for wind field extrapolation in two spatial dimensions. The efficacy of the proposed methodologies is demonstrated by considering various numerical examples. These refer to reconstruction of wind time-histories with missing data compatible with a joint wavenumber-frequency power spectral density, as well as to extrapolation to various locations in the spatial domain.

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Type
research article
DOI
10.1016/j.ymssp.2021.107975
Web of Science ID

WOS:000675885900005

Author(s)
Pasparakis, George D.
dos Santos, Ketson R. M.  
Kougioumtzoglou, Ioannis A.
Beer, Michael
Date Issued

2022-01-01

Published in
Mechanical Systems And Signal Processing
Volume

162

Article Number

107975

Subjects

Engineering, Mechanical

•

Engineering

•

wind data

•

stochastic field

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sparse representations

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compressive sampling

•

low-rank matrix

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spectrum estimation subject

•

simulation

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
EESD  
Available on Infoscience
January 31, 2022
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/185013
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