Abstract
We clarified the effect of the gas-phase film on the fall velocity of a highly water-repellent sphere in Newtonian fluids. Experiments were carried out for the measurements of physical properties of the gas-liquid interface and the fall velocity by the falling sphere method in the Reynolds number range of 93.2<Re<10032. The thicknesses of the gas-phase films around the sphere were about 61-91μm. The terminal velocity of the highly water-repellent sphere decreased more than that of the normal smooth sphere and the maximum drag reduction ratio was 14.6% for the highly water-repellent surface at Re=93.2.
Full Text 
Sign-in/Register to access full text options
Sign-in/Register to access full text options 
Paper version not known
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B
Paper Title
Journal
Date
