The impact of floating water plants on wind-induced flow and wind wave in a closed water area

Akinori Ozaki, Kunihiko Hamagami, Ken Mori, Eiji Inoue, Tomokazu Haraguchi

研究成果: 会議への寄与タイプ論文

抄録

In some closed water bodies, the fluids are generally stratified based on vertical density differences. The causes of density these differences can be categorized as being due to temperature, salt levels, and turbidity. In addition, the dynamics of water environmental substances are induced by wind-induced turbulence, which is based on mechanical disturbances, and convective flow, which is based on thermal disturbances. Wind-induced flow and wind waves are produced when mechanical disturbances act on the water surface. These effects in turn generate a lowering of the density interface and increases in the upper layer density based on mixing between upper- and lower-layer fluids, which is commonly referred to as an entrainment phenomenon. This entrainment phenomenon greatly affects the dynamics of water quality in a closed water body. The production of turbulent energy at the water surface and its transport towards the interface play an important role in the dynamics of water environmental substances. When the surface of a closed water body is partially covered with floating water plants, it is considered that wind waves and wind current based on wind action body affected by the plants to some extent, especially in small reservoirs and creeks, which have less surface area for the wind to acts on. We have previously reported that the value of entrainment velocity decreases as the coverage rate of floating water plants increases. It is considered that the covered water surface cause a reduction in the turbulent energy produced by wind shear. It is therefore important to clarify the effects of floating water plants on the wind-induced flow and wind waves generated by wind shear. Accordingly we experimentally considered the turbulent characteristics of wind-induced flow and wind waves in a closed water body with floating water plants. The results indicate that the energy of wind-induced flow is affected by the existence of floating water plants and that the energy decrease as the covereage rate of floating water plants increases.

元の言語英語
ページ2381-2393
ページ数13
出版物ステータス出版済み - 12 1 2004
イベントASAE Annual International Meeting 2004 - Ottawa, ON, カナダ
継続期間: 8 1 20048 4 2004

その他

その他ASAE Annual International Meeting 2004
カナダ
Ottawa, ON
期間8/1/048/4/04

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Water
Fluids
Turbidity
Water quality
Turbulence
Salts

All Science Journal Classification (ASJC) codes

  • Engineering(all)

これを引用

Ozaki, A., Hamagami, K., Mori, K., Inoue, E., & Haraguchi, T. (2004). The impact of floating water plants on wind-induced flow and wind wave in a closed water area. 2381-2393. 論文発表場所 ASAE Annual International Meeting 2004, Ottawa, ON, カナダ.

The impact of floating water plants on wind-induced flow and wind wave in a closed water area. / Ozaki, Akinori; Hamagami, Kunihiko; Mori, Ken; Inoue, Eiji; Haraguchi, Tomokazu.

2004. 2381-2393 論文発表場所 ASAE Annual International Meeting 2004, Ottawa, ON, カナダ.

研究成果: 会議への寄与タイプ論文

Ozaki, A, Hamagami, K, Mori, K, Inoue, E & Haraguchi, T 2004, 'The impact of floating water plants on wind-induced flow and wind wave in a closed water area' 論文発表場所 ASAE Annual International Meeting 2004, Ottawa, ON, カナダ, 8/1/04 - 8/4/04, pp. 2381-2393.
Ozaki A, Hamagami K, Mori K, Inoue E, Haraguchi T. The impact of floating water plants on wind-induced flow and wind wave in a closed water area. 2004. 論文発表場所 ASAE Annual International Meeting 2004, Ottawa, ON, カナダ.
Ozaki, Akinori ; Hamagami, Kunihiko ; Mori, Ken ; Inoue, Eiji ; Haraguchi, Tomokazu. / The impact of floating water plants on wind-induced flow and wind wave in a closed water area. 論文発表場所 ASAE Annual International Meeting 2004, Ottawa, ON, カナダ.13 p.
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