The contact angle for spherical droplet in rough and homogeneous cavity with arc generatrix

Ai-Jun Hu, Fu-Ying He


The contact angle for spherical droplet in rough and homogeneous cavity with arc generatix is studied. The solid-liquid-vapor system is separated into six portions. A generalized Wenzel equation for the contact angle considering the line tension effects is developed for the three-phase system. Under certain hypotheses, this generalized Wenzel equation is the same as the classical Wenzel equation.


Contact angle; Wenzel equation; Line tension; Cavity; Surface tension

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