Turbulent Structures of Wind Induced Flow in a Closed Density Stratified Water Area Partially Covered with the Floating Water Plants - Collections | Kyushu University Library

＜departmental bulletin paper＞
Turbulent Structures of Wind Induced Flow in a Closed Density Stratified Water Area Partially Covered with the Floating Water Plants

Creator	Creator Name 村松, 亮介 Matsumura, Ryosuke Affiliation Affiliation Name Graduate School of Bioresource and Environmental Sciences, Kyushu University
	Author PID K003776 Creator Name 尾崎, 彰則 Ozaki, Akinori Affiliation Affiliation Name 九州大学大学院生物資源環境科学府 Graduate School of Bioresource and Environmental Sciences, Kyushu University
	Author PID K001562 Creator Name 森, 健 Mori, Ken Affiliation Affiliation Name 九州大学大学院農学研究院 Faculty of Agriculture, Kyushu University
	Author PID K001580 Creator Name 井上, 英二 Inoue, Eiji Affiliation Affiliation Name 九州大学大学院生物資源環境科学府 Graduate School of Bioresource and Environmental Sciences, Kyushu University
	Author PID K001651 Creator Name 原口, 智和 Haraguchi, Tomokazu Affiliation Affiliation Name 九州大学大学院生物資源環境科学府 Graduate School of Bioresource and Environmental Sciences, Kyushu University
Language	Japanese
Publisher	九州大学大学院農学研究院
Publisher	Faculty of Agriculture, Kyushu University
Date	2002-10
Source Title	Science bulletin of the Faculty of Agriculture, Kyushu University
Vol	57
Issue	1
First Page	45
Last Page	52
Publication Type	Version of Record
Access Rights	open access
JaLC DOI	https://doi.org/10.15017/21121

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PISSN	1347-0159
NCID	AA11577672
Record ID	21121
Peer-Reviewed	Unrefereed
Subject Terms	浮葉性水草
	閉鎖性2成層水域
	吹送流
	乱流構造
	水質変動
Notes	Pollutants tends to accumulate in enclosed ponds, lakes, estuaries because the water stays in one place for many years. Water quality in such closed watef area is changed by outside disturbances (wind, solar heat, etc.). An experimental investigation of turbulent structures induced by wind action in the area which has a two layer system was carried out in a laboratory wind-wave tank. Such closed water area, on one hand, has ecosystem diversity. Especially in warm climate areas, various water plants grow by the shore of the closed water area. But it is considered that the water plants which cut a part of wind play an important role in the turbulent structures. Hence the experiments to clarify the relationship between the water plants and the turbulent structures were performed. In the experiments, the water plants imitated by a styrene foam were set afloat in a laboratory wind-wave tank. And it was divided four types by the covered rate of the imitated water plants to compare. Results of the expetiments indicate that the existence of the water plants contribute to make a significant effect on the scale of the turbulent structures. lt is also studied that an increase of the rate of the water plants reduces its scale gradually.
Notes	本研究から，浮難水草による被覆率の増大に伴って，吹送流型2成層流の上層の乱流エネルギーの発生および輸送が妨げられる結果を得た．また，これまでに行ってきた閉鎖性2成層流の連行速度に関する実験についても，乱流構造と連行現象は密接な関係を持つており，乱流エネルギーの収支を把握することによって再評価することができた．先に述べたように，湖沼や貯水池，または親水公園等において最適な水環境を創造するためには周辺の生態系を加味した水質変動の時空間的な把握が必要となっている．本研究では特に浮葉性の水草の存在を考慮することで，その水草が閉鎖性水域の水循環に与える影響を把握した．これは水質変動を予測するモデルの構築の一助となるものである．
Created Date	2012.07.26
Modified Date	2022.11.11