Surface tension influence in vessel discharge: Comment on 'experimental study of Bernoulli's equation with losses,' by Martín Eduardo Saleta, Dina Tobia, and Salvador Gil [Am. J. Phys. 73 (7), 598-602 (2005)]

摘要

Saleta, Tobia, and Gil1 have proposed an interesting and easy experiment to show the effect of losses on the discharge of a fluid from a vessel and to test its implications for their theoretical model based on Bernoulli’s equation. The experiment consists of an improved version of the classical Torricelli experiment and provides a useful and interesting approach to the flow of viscous fluids while exhibiting the influence of energy losses. This note extends their work by adding some comments about the interpretation of one of the energy losses.