EXPERIMENTAL STUDY OF DRIFT OBJECTS USING SPATIOTEMPORAL DATA UNDER COMPLEX VELOCITY FIELD
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- CHIDA Yu
- 港湾空港技術研究所 津波高潮研究グループ
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- FUKUI Nobuki
- 京都大学 大学院工学研究科
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- MORI Nobuhito
- 京都大学 防災研究所
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- YASUDA Tomohiro
- 関西大学 環境都市工学部
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- YAMAMOTO Takashi
- 関西大学 大学院理工学研究科
Bibliographic Information
- Other Title
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- 漂流物と流れ場の時空間計測データを用いた複雑流れ場における津波漂流物挙動の解析
- ヒョウリュウブツ ト ナガレバ ノ ジクウカン ケイソク データ オ モチイタ フクザツ ナガレバ ニ オケル ツナミ ヒョウリュウブツ キョドウ ノ カイセキ
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Abstract
<p> Drift objects such as vessels and vehicles generated by a tsunami are strongly affected by local velocity fields and topography and show complicated behavior. However it is difficult to observe the behavior of drifting objects during an actual tsunami attack and most of previous experiments used simple topography. Therefore, we carried out several experiments using two types of large and small drift models and a coastal city model, and analyzed the characteristics of drift motion in complicated velocity field. As a result, the behavior and landing area of drifting objects can be classified into several patterns in the case of large objects experiments, and the speed of drift objects becomes small in the area where the building density is high in the small objects experiments. Furthermore, it was clarified from the virtual particle experiment using spatiotemporal data of the velocity field that accurate evaluation of the collide with the sea floor and the rotational motion of drift objects is important for the reproduction by numerical models.</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_313-I_318, 2020
Japan Society of Civil Engineers
