Interfacial tension measurements using a new axisymmetric drop/bubble shape technique.

ABSTRACT: This paper introduces a new mathematical model that is used to compute either the interfacial tension of quiescent axisymmetric pendant/sessile drops and pendant/captive bubbles. This model consists of the Young-Laplace equation, that describes interface shape, together with suitable boundary conditions that guarantee a prescribed volume of drops/bubbles and a fixed position in the capillary. In order to solve the problem numerically, the Young-Laplace equation is discretized by using numerical differentiation and the numerical solutions are obtained applying the well-know Newton method. The paper contains a validation of the new methodology presented for what theoretical bubble/drops are used. Finally, some numerical results are presented for both drops and bubbles of water as well as sev

SUBMITTER: Cabrerizo-Vilchez MA 

PROVIDER: S-EPMC9064388 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature