Image processing technique of smoke flow visualization for the prediction of behavior of airborne sea salt around a bridge girder

Hiroshi Hasebe; Tsubasa Kosugi; Shion Hatamoto; Taito Kawai; Syunya Nakayama; Takashi Nomuta

doi:10.3850/978-981-07-8012-8_193

Image processing technique of smoke flow visualization for the prediction of behavior of airborne sea salt around a bridge girder

Hiroshi Hasebe, Tsubasa Kosugi, Shion Hatamoto, Taito Kawai, Syunya Nakayama, Takashi Nomuta

生物資源科学部

Nihon University

研究成果: 書籍の章/レポート/Proceedings › 会議への寄与 › 査読

1 被引用数 (Scopus)

抄録

Recently, the importance of maintenance to infrastructures has been increasing. One of the most important points in bridge maintenance is to prevent its corrosion. Especially, it is necessary to predict the advection diffusion behavior of airborne sea salt around a bridge girder because bridges located in coastal areas are affected by it. In the present study, in order to predict the behavior of airborne sea salt, we conducted flow visualizations around a square cylinder and a bridge girder which has two I-girders. Then we evaluated smoke concentration of the visualized flows by using the image processing technique. As a result, it is confirmed that smoke concentration of the inner region of the separated shear layer is very small. Therefore, it can be estimated amount of airborne sea salt inside the separated shear layer region is smaller than other regions.

本文言語	英語
ホスト出版物のタイトル	Proceedings of the 8th Asia-Pacific Conference on Wind Engineering, APCWE 2013
編集者	Nagesh R. Iyer, Prem Krishna, Rajan S. Selvi, P. Harikrishna
出版社	Research Publishing Services
ページ	150-157
ページ数	8
ISBN（電子版）	9789810780111
DOI	https://doi.org/10.3850/978-981-07-8012-8_193
出版ステータス	出版済み - 2013
イベント	8th Asia-Pacific Conference on Wind Engineering, APCWE 2013 - Chennai, インド継続期間: 10 12月 2013 → 14 12月 2013

出版物シリーズ

名前	Proceedings of the 8th Asia-Pacific Conference on Wind Engineering, APCWE 2013

会議

会議	8th Asia-Pacific Conference on Wind Engineering, APCWE 2013
国/地域	インド
City	Chennai
Period	10/12/13 → 14/12/13

UN SDG

この成果は、次の持続可能な開発目標に貢献しています

文献へのアクセス

10.3850/978-981-07-8012-8_193

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引用スタイル

Hasebe, H., Kosugi, T., Hatamoto, S., Kawai, T., Nakayama, S., & Nomuta, T. (2013). Image processing technique of smoke flow visualization for the prediction of behavior of airborne sea salt around a bridge girder. In N. R. Iyer, P. Krishna, R. S. Selvi, & P. Harikrishna (Eds.), Proceedings of the 8th Asia-Pacific Conference on Wind Engineering, APCWE 2013 (pp. 150-157). (Proceedings of the 8th Asia-Pacific Conference on Wind Engineering, APCWE 2013). Research Publishing Services. https://doi.org/10.3850/978-981-07-8012-8_193

Hasebe, Hiroshi ; Kosugi, Tsubasa ; Hatamoto, Shion その他. / Image processing technique of smoke flow visualization for the prediction of behavior of airborne sea salt around a bridge girder. Proceedings of the 8th Asia-Pacific Conference on Wind Engineering, APCWE 2013. editor / Nagesh R. Iyer ; Prem Krishna ; Rajan S. Selvi ; P. Harikrishna. Research Publishing Services, 2013. pp. 150-157 (Proceedings of the 8th Asia-Pacific Conference on Wind Engineering, APCWE 2013).

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title = "Image processing technique of smoke flow visualization for the prediction of behavior of airborne sea salt around a bridge girder",

abstract = "Recently, the importance of maintenance to infrastructures has been increasing. One of the most important points in bridge maintenance is to prevent its corrosion. Especially, it is necessary to predict the advection diffusion behavior of airborne sea salt around a bridge girder because bridges located in coastal areas are affected by it. In the present study, in order to predict the behavior of airborne sea salt, we conducted flow visualizations around a square cylinder and a bridge girder which has two I-girders. Then we evaluated smoke concentration of the visualized flows by using the image processing technique. As a result, it is confirmed that smoke concentration of the inner region of the separated shear layer is very small. Therefore, it can be estimated amount of airborne sea salt inside the separated shear layer region is smaller than other regions.",

keywords = "Airborne sea salt, Bridge girder, Flow visualization, Image processing technique",

author = "Hiroshi Hasebe and Tsubasa Kosugi and Shion Hatamoto and Taito Kawai and Syunya Nakayama and Takashi Nomuta",

note = "Publisher Copyright: Copyright {\textcopyright} 2013 APCWE-VIII. All rights reserved. Published by Research Publishing, Singapore.; 8th Asia-Pacific Conference on Wind Engineering, APCWE 2013 ; Conference date: 10-12-2013 Through 14-12-2013",

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Hasebe, H, Kosugi, T, Hatamoto, S, Kawai, T, Nakayama, S & Nomuta, T 2013, Image processing technique of smoke flow visualization for the prediction of behavior of airborne sea salt around a bridge girder. in NR Iyer, P Krishna, RS Selvi & P Harikrishna (eds), Proceedings of the 8th Asia-Pacific Conference on Wind Engineering, APCWE 2013. Proceedings of the 8th Asia-Pacific Conference on Wind Engineering, APCWE 2013, Research Publishing Services, pp. 150-157, 8th Asia-Pacific Conference on Wind Engineering, APCWE 2013, Chennai, インド, 10/12/13. https://doi.org/10.3850/978-981-07-8012-8_193

Image processing technique of smoke flow visualization for the prediction of behavior of airborne sea salt around a bridge girder. / Hasebe, Hiroshi; Kosugi, Tsubasa; Hatamoto, Shion その他.
Proceedings of the 8th Asia-Pacific Conference on Wind Engineering, APCWE 2013. ed. / Nagesh R. Iyer; Prem Krishna; Rajan S. Selvi; P. Harikrishna. Research Publishing Services, 2013. p. 150-157 (Proceedings of the 8th Asia-Pacific Conference on Wind Engineering, APCWE 2013).

研究成果: 書籍の章/レポート/Proceedings › 会議への寄与 › 査読

TY - GEN

T1 - Image processing technique of smoke flow visualization for the prediction of behavior of airborne sea salt around a bridge girder

AU - Hasebe, Hiroshi

AU - Kosugi, Tsubasa

AU - Hatamoto, Shion

AU - Kawai, Taito

AU - Nakayama, Syunya

AU - Nomuta, Takashi

PY - 2013

Y1 - 2013

N2 - Recently, the importance of maintenance to infrastructures has been increasing. One of the most important points in bridge maintenance is to prevent its corrosion. Especially, it is necessary to predict the advection diffusion behavior of airborne sea salt around a bridge girder because bridges located in coastal areas are affected by it. In the present study, in order to predict the behavior of airborne sea salt, we conducted flow visualizations around a square cylinder and a bridge girder which has two I-girders. Then we evaluated smoke concentration of the visualized flows by using the image processing technique. As a result, it is confirmed that smoke concentration of the inner region of the separated shear layer is very small. Therefore, it can be estimated amount of airborne sea salt inside the separated shear layer region is smaller than other regions.

AB - Recently, the importance of maintenance to infrastructures has been increasing. One of the most important points in bridge maintenance is to prevent its corrosion. Especially, it is necessary to predict the advection diffusion behavior of airborne sea salt around a bridge girder because bridges located in coastal areas are affected by it. In the present study, in order to predict the behavior of airborne sea salt, we conducted flow visualizations around a square cylinder and a bridge girder which has two I-girders. Then we evaluated smoke concentration of the visualized flows by using the image processing technique. As a result, it is confirmed that smoke concentration of the inner region of the separated shear layer is very small. Therefore, it can be estimated amount of airborne sea salt inside the separated shear layer region is smaller than other regions.

KW - Airborne sea salt

KW - Bridge girder

KW - Flow visualization

KW - Image processing technique

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Hasebe H, Kosugi T, Hatamoto S, Kawai T, Nakayama S, Nomuta T. Image processing technique of smoke flow visualization for the prediction of behavior of airborne sea salt around a bridge girder. In Iyer NR, Krishna P, Selvi RS, Harikrishna P, editors, Proceedings of the 8th Asia-Pacific Conference on Wind Engineering, APCWE 2013. Research Publishing Services. 2013. p. 150-157. (Proceedings of the 8th Asia-Pacific Conference on Wind Engineering, APCWE 2013). doi: 10.3850/978-981-07-8012-8_193