Diffusion and Control of Water Jets

水射流的扩散与控制

• 批准号: 08650207
• 负责人: SUDOU Kouzou
• 金额: $ 1.41万
• 依托单位: HIROSHIMA UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08650207/
• 关键词: Water Jet; Flow Visualization; Attachment Phenomena; Hydraulic Jump; Hydrogen Bubble Method; Tracer Particle Metod; Jet Deflection; Classification of Flow Pattern; 拡散

1. Contents of research made in 1996-1997(1) Two-dimensional water jets below free surface are visualized varing Reynolds number, nozzle to bottom plate depth and nozzle to water surface height.(2) The velocity distributions are given in the form of the vector diagram and the decay of maximum velocity is investigated in each flow pattern.(3) Hight and horizontal distance of maximum water level point are measured varing Reynolds number, nozzle to bottom plate depth and nozzle to water surface height.2. Results obtained in 1996-1997(1) The defecting directions of the submerged jets are classified the following three types by the condition under which the jet issues from nozzle.(2) The horizontal distance of the attachment point is decided by the nozzle to water surface height only in the flow attaching to the free boundary, and by the nozzle to bottom plate depth only in the flow attaching to the solid boundary.(3) The flow attaching to the free boundary can be classified mainly the six types by flow pattern.(4) The flow attaching to the free boundary diffuse faster than the flow attaching to the solid boundary

1.（1）对不同雷诺数、喷嘴距底板深度和喷嘴距水面高度下的二维水射流进行了数值模拟。(2)以矢量图的形式给出了速度分布，并研究了各流型下最大速度的衰减规律。(3)测量了不同雷诺数、喷嘴距底板深度和喷嘴距水面高度下最大水位点的高度和水平距离. 1996-1997年的研究结果表明：（1）淹没射流的偏转方向按射流出口的条件分为以下三种类型。(2)附着点的水平距离在附着于自由边界的水流中仅由喷嘴到水面的高度决定，在附着于固体边界的水流中仅由喷嘴到底板的深度决定。(3)附着在自由边界上的流动按流型主要可分为六种类型。(4)附着在自由边界上的流动比附着在固体边界上的流动扩散快

项目成果

須藤, 浩三: "二次元水噴流の付着現象と拡散" 日本機械学会論文集(B編). 64. 350-358 (1998)

Sudo, Kozo：“二维水射流的粘附现象和扩散”日本机械工程师学会会议录（ed. B）64. 350-358（1998）。

須藤, 浩三: "二次元水噴流の可視化と流動解析" 可視化情報. 16. 203-206 (1996)

Sudo, Kozo：“二维水射流的可视化和流动分析”可视化信息。 16. 203-206 (1996)

Kozo SUDOU: "Attachment Phenomena and Flow Patterns of Two-Dimensional Water Jets" Proc. 5th Triennial Int. Symo. on FLUCOME. 2. 833-838 (1997)

Kozo SUDOU：“二维水射流的附着现象和流动模式”Proc。

Kouzou SUDOU: "Reattachment Phenomena and Diffusion of Plane Submerged Water Jets" Trans.Jpn.Soc.Mech.Eng.64-618. 350-358 (1998)

Kouzou SUDOU：“平面浸没水射流的重新附着现象和扩散”Trans.Jpn.Soc.Mech.Eng.64-618。

須藤 浩三: "二次元水噴流の付着現象と拡散" 日本機械学会論文集(B編). 618-64. 350-358 (1998)

Kozo Sudo：“二维水射流的粘附现象和扩散”日本机械工程师学会会刊（B 版）350-358（1998 年）。