Motion of the Adhered Liquid after Fall of the Liquid Surface in a Vertical Tube

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The motion of the adhered liquid in a vertical tube remaining after the liquid column surface fell was examined as functions of both the falling speed and viscosity theoretically and experimentally. As a consequence, the equations determing the flow of the adhered liquid were expanded. It was found from the above experiment that the thickness of the adhered liquid was composed of two regions; in the upper region of the adhered liquid the thickness was in proportion to the square root of the distance from the initial position of the falling liquid column surface, and in the bottom region the thickness was not dependent on the distance but constant. It was also found that after the adhered liquid fell the height of the elevating liquid column surface was in proportion to the square roots of both the falling speed and viscosity.
東海大学の論文