海洋開発論文集
Online ISSN : 1884-8265
Print ISSN : 0912-7348
ISSN-L : 0912-7348
三次元流動解析に基づく底泥回収装置の検討
蟹江 俊仁鈴木 雄太佐藤 太裕旭 幸司高橋 伸次郎井上 卓悦
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ジャーナル フリー

2007 年 23 巻 p. 309-314

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At the time being, deterioration in water quality of closed water body has become a serious issue for local fishery and accumulation of mud layer which covers lakebed has been thought as the cause of deterioration. Then, it can be said that maintenance and preservation of the water environment by retrieving those mud layer is one of the most important subjects to enhance and to promote regional economy in the vicinity with preserving precious marine resources.
The authors have proposed a new retrieving method of lakebed mud on site. This method has been developed as an innovative way that requires neither additional chemicals for condensation of the mud nor a temporary yard for desiccation of the mud. After the first phase with indoor model experiment, it was confirmed that the method successfully retrieve the mud and an on-site experiment is now under planning. In this paper, the authors report a study result on the device, especially the shape of retrieving fan, with 3-D flow analysis. Through this study, important knowledge for designing the shape of fan was obtained in order to expect efficient retrieving. Though further experiment is necessary under various mud conditions to improve the efficiency, the method is getting close to a reality.

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