Investigation and control of the flow status in the rotating flow field with rigid and free surfaces

刚性自由表面旋转流场流动状态研究与控制

• 批准号: 23560193
• 负责人: WATANABE Takashi
• 金额: $ 3.33万
• 依托单位: Nagoya University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2013
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23560193/
• 关键词: 旋回流; 分岐; 遷移ダイナミクス; 回転円板; 回転円柱; 自由表面; 計算流体力学; 実験流体力学; 分岐現象; 旋回流; 分岐; 遷移ダイナミクス; 回転円板; 回転円柱; 自由表面; 計算流体力学; 実験流体力学; 分岐現象

The flows around a rotating disk in a cylindrical casing and the flows between vertical coaxial cylinders are examined and the flow control method to obtain a optimal states is established. In the flow around the rotating disk, a variety of flow modes that originate from the radial clearance between the disk rim and the shroud and depend on the Reynolds number and the flow configuration are specified and classified. At the high Reynolds numbers, the interaction between the flow in the radial clearance and the spiral rolls in the disk region is investigated. In the flow between rotating cylinders, the transient Reynolds numbers at which the secondary flows transit to the primary flows are determined. These results give a new insight into the investigation of the dynamical mechanics in the three-dimensional rotating flows and contribute to provide control conditions to attain favorable flows.

围绕圆柱壳中的旋转磁盘的流动，检查了垂直同轴缸之间的流量，并确定了获得最佳状态的流控制方法。 在旋转磁盘周围的流动中，各种流量模式来自磁盘轮辋和裹尸布之间的径向间隙，并依赖于雷诺数和流量配置。 在高雷诺数上，研究了径向清除率中的流量与磁盘区域中的螺旋卷之间的相互作用。 在旋转缸之间的流动中，确定次级流向主要流的临时雷诺数。 这些结果为三维旋转流中动力学的研究提供了新的见解，并有助于提供控制条件以获得有利的流量。