Application of phase decomposition to the analysis of random time series from wave basin tests

Thomas A.A. Adcock, Xingya Feng, Tianning Tang, Ton S. Van Den Bremer, Sandy Day, Saishuai Dai, Ye Li, Zhiliang Lin, Wentao Xu, Paul H. Taylor

Research output: Chapter in Book/Conference paperConference paper

2 Citations (Scopus)

Abstract

Many ocean engineering problems involve bound harmonics which are slaved to some underlying assumed close to linear time series. When analyzing signals we often want to remove the bound harmonics so as to "linearise" the data or to extract individual bound harmonic components so that they may be studied. For even moderately broadbanded systems filtering in the frequency domain is not sufficient to separate components as they overlap in frequency. One way to overcome this difficulty is to use input signals with the same linear envelope but with different phases and then use simple addition and subtraction of the resulting signals to extract different harmonics. This approach has been established for the analysis of wave groups. In this paper we examine whether this approach can be used on random time series as well. We analyse random wave time series of wave elevation from the towing tank in Shanghai Jiao Tong University and force measurements on a cylinder taken in the Kelvin tank at the University of Strathclyde.

Original languageEnglish
Title of host publicationRodney Eatock Taylor Honoring Symposium on Marine and Offshore Hydrodynamics; Takeshi Kinoshita Honoring Symposium on Offshore Technology
Place of PublicationScotland
PublisherThe American Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791858882
DOIs
Publication statusPublished - 2019
EventASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2019 - Glasgow, United Kingdom
Duration: 9 Jun 201914 Jun 2019

Publication series

NameProceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE
Volume9

Conference

ConferenceASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2019
CountryUnited Kingdom
CityGlasgow
Period9/06/1914/06/19

Fingerprint

Time series
Decomposition
Ship model tanks
Ocean engineering
Force measurement

Cite this

Adcock, T. A. A., Feng, X., Tang, T., Van Den Bremer, T. S., Day, S., Dai, S., ... Taylor, P. H. (2019). Application of phase decomposition to the analysis of random time series from wave basin tests. In Rodney Eatock Taylor Honoring Symposium on Marine and Offshore Hydrodynamics; Takeshi Kinoshita Honoring Symposium on Offshore Technology (Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE; Vol. 9). Scotland: The American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/OMAE2019-95172
Adcock, Thomas A.A. ; Feng, Xingya ; Tang, Tianning ; Van Den Bremer, Ton S. ; Day, Sandy ; Dai, Saishuai ; Li, Ye ; Lin, Zhiliang ; Xu, Wentao ; Taylor, Paul H. / Application of phase decomposition to the analysis of random time series from wave basin tests. Rodney Eatock Taylor Honoring Symposium on Marine and Offshore Hydrodynamics; Takeshi Kinoshita Honoring Symposium on Offshore Technology. Scotland : The American Society of Mechanical Engineers (ASME), 2019. (Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE).
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title = "Application of phase decomposition to the analysis of random time series from wave basin tests",
abstract = "Many ocean engineering problems involve bound harmonics which are slaved to some underlying assumed close to linear time series. When analyzing signals we often want to remove the bound harmonics so as to {"}linearise{"} the data or to extract individual bound harmonic components so that they may be studied. For even moderately broadbanded systems filtering in the frequency domain is not sufficient to separate components as they overlap in frequency. One way to overcome this difficulty is to use input signals with the same linear envelope but with different phases and then use simple addition and subtraction of the resulting signals to extract different harmonics. This approach has been established for the analysis of wave groups. In this paper we examine whether this approach can be used on random time series as well. We analyse random wave time series of wave elevation from the towing tank in Shanghai Jiao Tong University and force measurements on a cylinder taken in the Kelvin tank at the University of Strathclyde.",
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Adcock, TAA, Feng, X, Tang, T, Van Den Bremer, TS, Day, S, Dai, S, Li, Y, Lin, Z, Xu, W & Taylor, PH 2019, Application of phase decomposition to the analysis of random time series from wave basin tests. in Rodney Eatock Taylor Honoring Symposium on Marine and Offshore Hydrodynamics; Takeshi Kinoshita Honoring Symposium on Offshore Technology. Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE, vol. 9, The American Society of Mechanical Engineers (ASME), Scotland, ASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2019, Glasgow, United Kingdom, 9/06/19. https://doi.org/10.1115/OMAE2019-95172

Application of phase decomposition to the analysis of random time series from wave basin tests. / Adcock, Thomas A.A.; Feng, Xingya; Tang, Tianning; Van Den Bremer, Ton S.; Day, Sandy; Dai, Saishuai; Li, Ye; Lin, Zhiliang; Xu, Wentao; Taylor, Paul H.

Rodney Eatock Taylor Honoring Symposium on Marine and Offshore Hydrodynamics; Takeshi Kinoshita Honoring Symposium on Offshore Technology. Scotland : The American Society of Mechanical Engineers (ASME), 2019. (Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE; Vol. 9).

Research output: Chapter in Book/Conference paperConference paper

TY - GEN

T1 - Application of phase decomposition to the analysis of random time series from wave basin tests

AU - Adcock, Thomas A.A.

AU - Feng, Xingya

AU - Tang, Tianning

AU - Van Den Bremer, Ton S.

AU - Day, Sandy

AU - Dai, Saishuai

AU - Li, Ye

AU - Lin, Zhiliang

AU - Xu, Wentao

AU - Taylor, Paul H.

PY - 2019

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N2 - Many ocean engineering problems involve bound harmonics which are slaved to some underlying assumed close to linear time series. When analyzing signals we often want to remove the bound harmonics so as to "linearise" the data or to extract individual bound harmonic components so that they may be studied. For even moderately broadbanded systems filtering in the frequency domain is not sufficient to separate components as they overlap in frequency. One way to overcome this difficulty is to use input signals with the same linear envelope but with different phases and then use simple addition and subtraction of the resulting signals to extract different harmonics. This approach has been established for the analysis of wave groups. In this paper we examine whether this approach can be used on random time series as well. We analyse random wave time series of wave elevation from the towing tank in Shanghai Jiao Tong University and force measurements on a cylinder taken in the Kelvin tank at the University of Strathclyde.

AB - Many ocean engineering problems involve bound harmonics which are slaved to some underlying assumed close to linear time series. When analyzing signals we often want to remove the bound harmonics so as to "linearise" the data or to extract individual bound harmonic components so that they may be studied. For even moderately broadbanded systems filtering in the frequency domain is not sufficient to separate components as they overlap in frequency. One way to overcome this difficulty is to use input signals with the same linear envelope but with different phases and then use simple addition and subtraction of the resulting signals to extract different harmonics. This approach has been established for the analysis of wave groups. In this paper we examine whether this approach can be used on random time series as well. We analyse random wave time series of wave elevation from the towing tank in Shanghai Jiao Tong University and force measurements on a cylinder taken in the Kelvin tank at the University of Strathclyde.

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M3 - Conference paper

T3 - Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE

BT - Rodney Eatock Taylor Honoring Symposium on Marine and Offshore Hydrodynamics; Takeshi Kinoshita Honoring Symposium on Offshore Technology

PB - The American Society of Mechanical Engineers (ASME)

CY - Scotland

ER -

Adcock TAA, Feng X, Tang T, Van Den Bremer TS, Day S, Dai S et al. Application of phase decomposition to the analysis of random time series from wave basin tests. In Rodney Eatock Taylor Honoring Symposium on Marine and Offshore Hydrodynamics; Takeshi Kinoshita Honoring Symposium on Offshore Technology. Scotland: The American Society of Mechanical Engineers (ASME). 2019. (Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE). https://doi.org/10.1115/OMAE2019-95172