垂直旋转圆盘边缘液体形态

For finding how the gravity affects the liquid on the rotating disc, the liquid morphology at the edge of the vertical rotating disc was experimentally studied by high-speed photography. The results show that there are three liquid morphologies at the edge of the vertical rotating disc: column, film and column film entanglement, which is different with the three morphologies at the horizontal rotating disc edge: direct drop, column and film. The liquid morphology at the bottom of the vertical disc does not match the top one, and the film morphology does not occur at the bottom. When the mass flow rate is less than 24 g/s, the liquid shows column morphology at the bottom, and when the mass flow rate is greater than or equal to 30 g/s, the liquid shows column film entanglement morphology. When the mass flow rate is between 12 g/s and 21 g/s and the rotating speed is between 1 000 r/min and 2 100 r/min, the liquid film morphology appears at the top of the disc. The liquid morphology is column when the mass flow rate is less than 12 g/s; if the mass flow rate is greater than 12 g/s, it will be replaced by column film entanglement. Due to the influence of gravity, the liquid morphology at the vertical disc edge changes much more than the horizontal disc; when the mass flow rate is large enough, the rotating speed required to form the liquid column at the bottom of the disc is greatly increased.