Study on Phase Characteristics of Wind Pressure Fields around a Prism Using Complex Proper Orthogonal Decomposition

Wind loads for the design of wind-resistant high-rise buildings are generally evaluated based on spectral modal analysis or time-history response analysis using wind pressure data obtained from wind tunnel experiments with rigid models. The characteristics of the fluctuating wind pressures around vi...
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Autor*in:	Tomoyuki Murakami [verfasserIn] Yuichiro Nishida [verfasserIn] Tetsuro Taniguchi [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2023

Schlagwörter:	fluctuating wind pressure field complex proper orthogonal decomposition prism wind tunnel experiment eigenmode rigid model

Übergeordnetes Werk:	In: Wind - MDPI AG, 2022, 3(2023), 1, Seite 35-63
Übergeordnetes Werk:	volume:3 ; year:2023 ; number:1 ; pages:35-63

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.3390/wind3010004

Katalog-ID:	DOAJ087212919

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520			\|a Wind loads for the design of wind-resistant high-rise buildings are generally evaluated based on spectral modal analysis or time-history response analysis using wind pressure data obtained from wind tunnel experiments with rigid models. The characteristics of the fluctuating wind pressures around vibrating buildings must be evaluated for relevant wind-resistant designs because the wind pressures around buildings are affected by their vibrations. One of the methods to investigate fluctuating fields is complex proper orthogonal decomposition (CPOD), which can express complicated pressure fields, including advection phenomena, as coherent structures. This paper presents the phase characteristics of fluctuating wind pressures around rigid and elastic models of a square-sectioned prism evaluated via CPOD analysis using the results of wind tunnel experiments. The evaluation procedure for the symmetricity of the fluctuating wind pressure modes obtained via CPOD is presented. The similarity of fluctuating wind pressure fields is evaluated as the congruency of the planes formed by the 1st- and 2nd-eigenmodes. With symmetricity and similarity, the fluctuating wind pressure fields are classified into three types: resonant and non-resonant states in smooth flow, and in gradient flow. The characteristics of the three types of wind pressure fields are shown, respectively, in the symmetric and anti-symmetric modes.
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allfields	10.3390/wind3010004 doi (DE-627)DOAJ087212919 (DE-599)DOAJ82455efbb9234690ba03f6cb6fc8c26c DE-627 ger DE-627 rakwb eng TK1001-1841 Tomoyuki Murakami verfasserin aut Study on Phase Characteristics of Wind Pressure Fields around a Prism Using Complex Proper Orthogonal Decomposition 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Wind loads for the design of wind-resistant high-rise buildings are generally evaluated based on spectral modal analysis or time-history response analysis using wind pressure data obtained from wind tunnel experiments with rigid models. The characteristics of the fluctuating wind pressures around vibrating buildings must be evaluated for relevant wind-resistant designs because the wind pressures around buildings are affected by their vibrations. One of the methods to investigate fluctuating fields is complex proper orthogonal decomposition (CPOD), which can express complicated pressure fields, including advection phenomena, as coherent structures. This paper presents the phase characteristics of fluctuating wind pressures around rigid and elastic models of a square-sectioned prism evaluated via CPOD analysis using the results of wind tunnel experiments. The evaluation procedure for the symmetricity of the fluctuating wind pressure modes obtained via CPOD is presented. The similarity of fluctuating wind pressure fields is evaluated as the congruency of the planes formed by the 1st- and 2nd-eigenmodes. With symmetricity and similarity, the fluctuating wind pressure fields are classified into three types: resonant and non-resonant states in smooth flow, and in gradient flow. The characteristics of the three types of wind pressure fields are shown, respectively, in the symmetric and anti-symmetric modes. fluctuating wind pressure field complex proper orthogonal decomposition prism wind tunnel experiment eigenmode rigid model Production of electric energy or power. Powerplants. Central stations Yuichiro Nishida verfasserin aut Tetsuro Taniguchi verfasserin aut In Wind MDPI AG, 2022 3(2023), 1, Seite 35-63 (DE-627)1809433568 2674032X nnns volume:3 year:2023 number:1 pages:35-63 https://doi.org/10.3390/wind3010004 kostenfrei https://doaj.org/article/82455efbb9234690ba03f6cb6fc8c26c kostenfrei https://www.mdpi.com/2674-032X/3/1/4 kostenfrei https://doaj.org/toc/2674-032X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 3 2023 1 35-63
spelling	10.3390/wind3010004 doi (DE-627)DOAJ087212919 (DE-599)DOAJ82455efbb9234690ba03f6cb6fc8c26c DE-627 ger DE-627 rakwb eng TK1001-1841 Tomoyuki Murakami verfasserin aut Study on Phase Characteristics of Wind Pressure Fields around a Prism Using Complex Proper Orthogonal Decomposition 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Wind loads for the design of wind-resistant high-rise buildings are generally evaluated based on spectral modal analysis or time-history response analysis using wind pressure data obtained from wind tunnel experiments with rigid models. The characteristics of the fluctuating wind pressures around vibrating buildings must be evaluated for relevant wind-resistant designs because the wind pressures around buildings are affected by their vibrations. One of the methods to investigate fluctuating fields is complex proper orthogonal decomposition (CPOD), which can express complicated pressure fields, including advection phenomena, as coherent structures. This paper presents the phase characteristics of fluctuating wind pressures around rigid and elastic models of a square-sectioned prism evaluated via CPOD analysis using the results of wind tunnel experiments. The evaluation procedure for the symmetricity of the fluctuating wind pressure modes obtained via CPOD is presented. The similarity of fluctuating wind pressure fields is evaluated as the congruency of the planes formed by the 1st- and 2nd-eigenmodes. With symmetricity and similarity, the fluctuating wind pressure fields are classified into three types: resonant and non-resonant states in smooth flow, and in gradient flow. The characteristics of the three types of wind pressure fields are shown, respectively, in the symmetric and anti-symmetric modes. fluctuating wind pressure field complex proper orthogonal decomposition prism wind tunnel experiment eigenmode rigid model Production of electric energy or power. Powerplants. Central stations Yuichiro Nishida verfasserin aut Tetsuro Taniguchi verfasserin aut In Wind MDPI AG, 2022 3(2023), 1, Seite 35-63 (DE-627)1809433568 2674032X nnns volume:3 year:2023 number:1 pages:35-63 https://doi.org/10.3390/wind3010004 kostenfrei https://doaj.org/article/82455efbb9234690ba03f6cb6fc8c26c kostenfrei https://www.mdpi.com/2674-032X/3/1/4 kostenfrei https://doaj.org/toc/2674-032X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 3 2023 1 35-63
allfields_unstemmed	10.3390/wind3010004 doi (DE-627)DOAJ087212919 (DE-599)DOAJ82455efbb9234690ba03f6cb6fc8c26c DE-627 ger DE-627 rakwb eng TK1001-1841 Tomoyuki Murakami verfasserin aut Study on Phase Characteristics of Wind Pressure Fields around a Prism Using Complex Proper Orthogonal Decomposition 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Wind loads for the design of wind-resistant high-rise buildings are generally evaluated based on spectral modal analysis or time-history response analysis using wind pressure data obtained from wind tunnel experiments with rigid models. The characteristics of the fluctuating wind pressures around vibrating buildings must be evaluated for relevant wind-resistant designs because the wind pressures around buildings are affected by their vibrations. One of the methods to investigate fluctuating fields is complex proper orthogonal decomposition (CPOD), which can express complicated pressure fields, including advection phenomena, as coherent structures. This paper presents the phase characteristics of fluctuating wind pressures around rigid and elastic models of a square-sectioned prism evaluated via CPOD analysis using the results of wind tunnel experiments. The evaluation procedure for the symmetricity of the fluctuating wind pressure modes obtained via CPOD is presented. The similarity of fluctuating wind pressure fields is evaluated as the congruency of the planes formed by the 1st- and 2nd-eigenmodes. With symmetricity and similarity, the fluctuating wind pressure fields are classified into three types: resonant and non-resonant states in smooth flow, and in gradient flow. The characteristics of the three types of wind pressure fields are shown, respectively, in the symmetric and anti-symmetric modes. fluctuating wind pressure field complex proper orthogonal decomposition prism wind tunnel experiment eigenmode rigid model Production of electric energy or power. Powerplants. Central stations Yuichiro Nishida verfasserin aut Tetsuro Taniguchi verfasserin aut In Wind MDPI AG, 2022 3(2023), 1, Seite 35-63 (DE-627)1809433568 2674032X nnns volume:3 year:2023 number:1 pages:35-63 https://doi.org/10.3390/wind3010004 kostenfrei https://doaj.org/article/82455efbb9234690ba03f6cb6fc8c26c kostenfrei https://www.mdpi.com/2674-032X/3/1/4 kostenfrei https://doaj.org/toc/2674-032X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 3 2023 1 35-63
allfieldsGer	10.3390/wind3010004 doi (DE-627)DOAJ087212919 (DE-599)DOAJ82455efbb9234690ba03f6cb6fc8c26c DE-627 ger DE-627 rakwb eng TK1001-1841 Tomoyuki Murakami verfasserin aut Study on Phase Characteristics of Wind Pressure Fields around a Prism Using Complex Proper Orthogonal Decomposition 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Wind loads for the design of wind-resistant high-rise buildings are generally evaluated based on spectral modal analysis or time-history response analysis using wind pressure data obtained from wind tunnel experiments with rigid models. The characteristics of the fluctuating wind pressures around vibrating buildings must be evaluated for relevant wind-resistant designs because the wind pressures around buildings are affected by their vibrations. One of the methods to investigate fluctuating fields is complex proper orthogonal decomposition (CPOD), which can express complicated pressure fields, including advection phenomena, as coherent structures. This paper presents the phase characteristics of fluctuating wind pressures around rigid and elastic models of a square-sectioned prism evaluated via CPOD analysis using the results of wind tunnel experiments. The evaluation procedure for the symmetricity of the fluctuating wind pressure modes obtained via CPOD is presented. The similarity of fluctuating wind pressure fields is evaluated as the congruency of the planes formed by the 1st- and 2nd-eigenmodes. With symmetricity and similarity, the fluctuating wind pressure fields are classified into three types: resonant and non-resonant states in smooth flow, and in gradient flow. The characteristics of the three types of wind pressure fields are shown, respectively, in the symmetric and anti-symmetric modes. fluctuating wind pressure field complex proper orthogonal decomposition prism wind tunnel experiment eigenmode rigid model Production of electric energy or power. Powerplants. Central stations Yuichiro Nishida verfasserin aut Tetsuro Taniguchi verfasserin aut In Wind MDPI AG, 2022 3(2023), 1, Seite 35-63 (DE-627)1809433568 2674032X nnns volume:3 year:2023 number:1 pages:35-63 https://doi.org/10.3390/wind3010004 kostenfrei https://doaj.org/article/82455efbb9234690ba03f6cb6fc8c26c kostenfrei https://www.mdpi.com/2674-032X/3/1/4 kostenfrei https://doaj.org/toc/2674-032X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 3 2023 1 35-63
allfieldsSound	10.3390/wind3010004 doi (DE-627)DOAJ087212919 (DE-599)DOAJ82455efbb9234690ba03f6cb6fc8c26c DE-627 ger DE-627 rakwb eng TK1001-1841 Tomoyuki Murakami verfasserin aut Study on Phase Characteristics of Wind Pressure Fields around a Prism Using Complex Proper Orthogonal Decomposition 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Wind loads for the design of wind-resistant high-rise buildings are generally evaluated based on spectral modal analysis or time-history response analysis using wind pressure data obtained from wind tunnel experiments with rigid models. The characteristics of the fluctuating wind pressures around vibrating buildings must be evaluated for relevant wind-resistant designs because the wind pressures around buildings are affected by their vibrations. One of the methods to investigate fluctuating fields is complex proper orthogonal decomposition (CPOD), which can express complicated pressure fields, including advection phenomena, as coherent structures. This paper presents the phase characteristics of fluctuating wind pressures around rigid and elastic models of a square-sectioned prism evaluated via CPOD analysis using the results of wind tunnel experiments. The evaluation procedure for the symmetricity of the fluctuating wind pressure modes obtained via CPOD is presented. The similarity of fluctuating wind pressure fields is evaluated as the congruency of the planes formed by the 1st- and 2nd-eigenmodes. With symmetricity and similarity, the fluctuating wind pressure fields are classified into three types: resonant and non-resonant states in smooth flow, and in gradient flow. The characteristics of the three types of wind pressure fields are shown, respectively, in the symmetric and anti-symmetric modes. fluctuating wind pressure field complex proper orthogonal decomposition prism wind tunnel experiment eigenmode rigid model Production of electric energy or power. Powerplants. Central stations Yuichiro Nishida verfasserin aut Tetsuro Taniguchi verfasserin aut In Wind MDPI AG, 2022 3(2023), 1, Seite 35-63 (DE-627)1809433568 2674032X nnns volume:3 year:2023 number:1 pages:35-63 https://doi.org/10.3390/wind3010004 kostenfrei https://doaj.org/article/82455efbb9234690ba03f6cb6fc8c26c kostenfrei https://www.mdpi.com/2674-032X/3/1/4 kostenfrei https://doaj.org/toc/2674-032X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 3 2023 1 35-63
language	English
source	In Wind 3(2023), 1, Seite 35-63 volume:3 year:2023 number:1 pages:35-63
sourceStr	In Wind 3(2023), 1, Seite 35-63 volume:3 year:2023 number:1 pages:35-63
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	fluctuating wind pressure field complex proper orthogonal decomposition prism wind tunnel experiment eigenmode rigid model Production of electric energy or power. Powerplants. Central stations
isfreeaccess_bool	true
container_title	Wind
authorswithroles_txt_mv	Tomoyuki Murakami @@aut@@ Yuichiro Nishida @@aut@@ Tetsuro Taniguchi @@aut@@
publishDateDaySort_date	2023-01-01T00:00:00Z
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The characteristics of the fluctuating wind pressures around vibrating buildings must be evaluated for relevant wind-resistant designs because the wind pressures around buildings are affected by their vibrations. One of the methods to investigate fluctuating fields is complex proper orthogonal decomposition (CPOD), which can express complicated pressure fields, including advection phenomena, as coherent structures. This paper presents the phase characteristics of fluctuating wind pressures around rigid and elastic models of a square-sectioned prism evaluated via CPOD analysis using the results of wind tunnel experiments. The evaluation procedure for the symmetricity of the fluctuating wind pressure modes obtained via CPOD is presented. The similarity of fluctuating wind pressure fields is evaluated as the congruency of the planes formed by the 1st- and 2nd-eigenmodes. 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callnumber-first	T - Technology
author	Tomoyuki Murakami
spellingShingle	Tomoyuki Murakami misc TK1001-1841 misc fluctuating wind pressure field misc complex proper orthogonal decomposition misc prism misc wind tunnel experiment misc eigenmode misc rigid model misc Production of electric energy or power. Powerplants. Central stations Study on Phase Characteristics of Wind Pressure Fields around a Prism Using Complex Proper Orthogonal Decomposition
authorStr	Tomoyuki Murakami
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topic_title	TK1001-1841 Study on Phase Characteristics of Wind Pressure Fields around a Prism Using Complex Proper Orthogonal Decomposition fluctuating wind pressure field complex proper orthogonal decomposition prism wind tunnel experiment eigenmode rigid model
topic	misc TK1001-1841 misc fluctuating wind pressure field misc complex proper orthogonal decomposition misc prism misc wind tunnel experiment misc eigenmode misc rigid model misc Production of electric energy or power. Powerplants. Central stations
topic_unstemmed	misc TK1001-1841 misc fluctuating wind pressure field misc complex proper orthogonal decomposition misc prism misc wind tunnel experiment misc eigenmode misc rigid model misc Production of electric energy or power. Powerplants. Central stations
topic_browse	misc TK1001-1841 misc fluctuating wind pressure field misc complex proper orthogonal decomposition misc prism misc wind tunnel experiment misc eigenmode misc rigid model misc Production of electric energy or power. Powerplants. Central stations
format_facet	Elektronische Aufsätze Aufsätze Elektronische Ressource
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title	Study on Phase Characteristics of Wind Pressure Fields around a Prism Using Complex Proper Orthogonal Decomposition
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title_full	Study on Phase Characteristics of Wind Pressure Fields around a Prism Using Complex Proper Orthogonal Decomposition
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doi_str_mv	10.3390/wind3010004
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title_sort	study on phase characteristics of wind pressure fields around a prism using complex proper orthogonal decomposition
callnumber	TK1001-1841
title_auth	Study on Phase Characteristics of Wind Pressure Fields around a Prism Using Complex Proper Orthogonal Decomposition
abstract	Wind loads for the design of wind-resistant high-rise buildings are generally evaluated based on spectral modal analysis or time-history response analysis using wind pressure data obtained from wind tunnel experiments with rigid models. The characteristics of the fluctuating wind pressures around vibrating buildings must be evaluated for relevant wind-resistant designs because the wind pressures around buildings are affected by their vibrations. One of the methods to investigate fluctuating fields is complex proper orthogonal decomposition (CPOD), which can express complicated pressure fields, including advection phenomena, as coherent structures. This paper presents the phase characteristics of fluctuating wind pressures around rigid and elastic models of a square-sectioned prism evaluated via CPOD analysis using the results of wind tunnel experiments. The evaluation procedure for the symmetricity of the fluctuating wind pressure modes obtained via CPOD is presented. The similarity of fluctuating wind pressure fields is evaluated as the congruency of the planes formed by the 1st- and 2nd-eigenmodes. With symmetricity and similarity, the fluctuating wind pressure fields are classified into three types: resonant and non-resonant states in smooth flow, and in gradient flow. The characteristics of the three types of wind pressure fields are shown, respectively, in the symmetric and anti-symmetric modes.
abstractGer	Wind loads for the design of wind-resistant high-rise buildings are generally evaluated based on spectral modal analysis or time-history response analysis using wind pressure data obtained from wind tunnel experiments with rigid models. The characteristics of the fluctuating wind pressures around vibrating buildings must be evaluated for relevant wind-resistant designs because the wind pressures around buildings are affected by their vibrations. One of the methods to investigate fluctuating fields is complex proper orthogonal decomposition (CPOD), which can express complicated pressure fields, including advection phenomena, as coherent structures. This paper presents the phase characteristics of fluctuating wind pressures around rigid and elastic models of a square-sectioned prism evaluated via CPOD analysis using the results of wind tunnel experiments. The evaluation procedure for the symmetricity of the fluctuating wind pressure modes obtained via CPOD is presented. The similarity of fluctuating wind pressure fields is evaluated as the congruency of the planes formed by the 1st- and 2nd-eigenmodes. With symmetricity and similarity, the fluctuating wind pressure fields are classified into three types: resonant and non-resonant states in smooth flow, and in gradient flow. The characteristics of the three types of wind pressure fields are shown, respectively, in the symmetric and anti-symmetric modes.
abstract_unstemmed	Wind loads for the design of wind-resistant high-rise buildings are generally evaluated based on spectral modal analysis or time-history response analysis using wind pressure data obtained from wind tunnel experiments with rigid models. The characteristics of the fluctuating wind pressures around vibrating buildings must be evaluated for relevant wind-resistant designs because the wind pressures around buildings are affected by their vibrations. One of the methods to investigate fluctuating fields is complex proper orthogonal decomposition (CPOD), which can express complicated pressure fields, including advection phenomena, as coherent structures. This paper presents the phase characteristics of fluctuating wind pressures around rigid and elastic models of a square-sectioned prism evaluated via CPOD analysis using the results of wind tunnel experiments. The evaluation procedure for the symmetricity of the fluctuating wind pressure modes obtained via CPOD is presented. The similarity of fluctuating wind pressure fields is evaluated as the congruency of the planes formed by the 1st- and 2nd-eigenmodes. With symmetricity and similarity, the fluctuating wind pressure fields are classified into three types: resonant and non-resonant states in smooth flow, and in gradient flow. The characteristics of the three types of wind pressure fields are shown, respectively, in the symmetric and anti-symmetric modes.
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title_short	Study on Phase Characteristics of Wind Pressure Fields around a Prism Using Complex Proper Orthogonal Decomposition
url	https://doi.org/10.3390/wind3010004 https://doaj.org/article/82455efbb9234690ba03f6cb6fc8c26c https://www.mdpi.com/2674-032X/3/1/4 https://doaj.org/toc/2674-032X
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Study on Phase Characteristics of Wind Pressure Fields around a Prism Using Complex Proper Orthogonal Decomposition

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