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海水中のウラン採取システムの研究

海水提铀系统研究

基本信息

批准号：
62603022
负责人：
為広正起
金额：
$ 2.05万
依托单位：
Hiroshima University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research on Priority Areas
财政年份：
1987
资助国家：
日本
起止时间：
1987 至无数据
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-62603022/
关键词：
吸着床抗力係数揚力係数上下揺張力積層内流速

项目摘要

(1)直径71cm, 厚さ17cmの円板状のかご型吸着床を176cmの間隔で3個積層し, これらをフレキシブルパイプで連結した吸着床を構成し, 吸着床の上方に取り付けた吸入管から吸着材を抽入し, そして吸着床の下端に取り付けた吸入管から吸着材を吸引回収する模型実験を行い, 抽入及び回収特性を求めた.(2)球状繊維吸着材を充填率0.1f/cm^3の割合で, 一辺の長さ10cmの正方形断面を有する溝形樋に積層し, これを一様流れの回流水槽に固定して, 回流水槽の流速と積層された吸着材を透過した水の流速との関係を求めた. これより, 積層厚さが約17cm以上となると積層内を透過した流速は5%以下になるが, 積層厚さが60cmにおいても2%の透過速度が生じていることが分った.(3)直径71cm厚さ17cmの円板状のかご型吸着床に吸着材を充填し, これを回流水槽内に吊して, 一様流中での吸着床に作用する抗力及び揚力を計測した. 流速とともに吸着床の傾斜角は増加し, これの増加とともに抗力係数Cp及び揚力係数C_Lは増加することが分かった.(4)直径22.5cm, 厚さ5.5cmの円板状かご型吸着床に吸着材を充填して, 5個の吸着床を6cm間隔で積層して, これを円筒浮体(直径11.4cm, 深さ40cm)に吊るして, 規則波中での上下揺及び吸着床に働く張力を計測した. これより, 吸着床を吊すことにより浮体の上下揺は減少し, 吸着床の張力は波長が大きくなるにつれ, 増大することが分かった.

(1) the diameter 71cm, thick 17cm billet plate type suction bed 176cm is separated by 3 active plates, the suction bed is formed into a suction bed, the suction tube is drawn at the top of the suction bed, the suction material is drawn into the suction tube, and the suction material is drawn at the lower end of the suction bed to attract the suction material back to the model bank. Suction and return characteristics are calculated. (2) the filling rate of spherical suction material 0.1f/ cm ^ 3 cut-off, the square section of a long 10cm has a square cross-section, the reflux flume is fixed, and the flow rate of the backflow tank is fixed. The thickness of the absorber is higher than that of the 17cm, and the temperature is less than 5% of the flow rate. (3) the diameter of the 71cm thick 17cm plate type suction bed is filled with suction material, and the reflux tank is suspended in the reflux tank. The resistance and force of the suction bed in the flow are calculated. The flow rate of the suction bed is much higher than that of the suction bed. (4) the diameter of the 22.5cm, the thickness of the 5.5cm, the plate shape of the suction bed, the suction material of the suction bed, the positive angle of the suction bed, the diameter of the suction bed, the angle of the suction bed, the resistance, the resistance, In the rule wave, the up and down and suction force of the bed are calculated. The floating body of the suction bed is slightly lower than that of the floating body, and the wave length of the suction bed is much higher than that of the floating body.