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本文描述一个旋转盘腔流场的实验研究。该盘腔由一个旋转盘,一个静止盘及静止的外围屏组成.实验表明在盘腔的两个盘面上都有边界层形成,在边界层中,流体除有切向速度外,还有沿径向的二次流存在。在边界层外的核心区中径向速度为零。一般来说,静盘边界层比转盘边界层向紊流转捩地要早。另外,压力的测量表明,在半径较大的区域中压力分布可由“流体以恒角速度旋转”的假设所得的结果近似。
This article describes an experimental study of the flow field in a rotating disk. The disk chamber consists of a rotating disk, a stationary disk and a stationary peripheral screen. Experiments show that there are boundary layers formed on both surfaces of the disk. In addition to the tangential velocity of the fluid, the radial secondary flow exists in the boundary layer. Radial velocity is zero in the core zone outside the boundary layer. In general, the static disk boundary layer is turbulent earlier than the turbulent boundary layer. In addition, the measurement of pressure shows that the pressure distribution in the area of large radius can be approximated by the assumption that “the fluid rotates at a constant angular velocity”.