EXPERIMENTAL STUDY ON GENERATION PROCESS OF SPLASHES DUE TO WAVE RUN-UP AT A VERTICAL SEAWALL
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- YAMASHIRO Masaru
- 九州大学大学院 アジア防災研究センター
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- YAMADA Shoki
- 九州大学大学院工学府海洋システム工学専攻
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- KOGA Kentaro
- 九州大学大学院工学府海洋システム工学専攻
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- KODAMA Mitsuyoshi
- 九州大学 工学部技術部計測・分析技術室
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- KAMIKUBO Yuji
- 熊本高等専門学校 建築社会デザイン工学科
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- YOKOTA Masaki
- 九州産業大学 建築都市工学部都市デザイン工学科
Bibliographic Information
- Other Title
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- 直立護岸における越波飛沫の発生過程に関する実験的研究
- チョクリツ ゴガン ニ オケル エッパ ヒマツ ノ ハッセイ カテイ ニ カンスル ジッケンテキ ケンキュウ
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Abstract
<p> In this study, model experiments were conducted using a two-dimensional wind-wave flame to clarify the generation process of splashes due to wave-overtopping at a vertical seawall. In the model experiment, the wave run-up splashes were visualized by backlight method and taken with a high-speed camera. Four individual waves in an irregular wave train which have different run-up heights and wave-overtopping quantity were selected for measurement. Wind speed was set to 3.0, 4.5 and 6.0 m/s. From the experimental data, the generation process of splashes was clarified. In the process of a wave run-up, relatively large water mass is swelled up due to wind like a balloon, and consequently bursts. The burst generates a large number of small splashes. The number of splashes increases as the wind speed and the run-up height increase, and the small splashes are dispersed over wider area behind the seawall.</p>
Journal
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- Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)
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Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 76 (2), I_847-I_852, 2020
Japan Society of Civil Engineers
