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An absolute method for the determination of surface tension of liquids using pendent drop profiles

Babu, Ramesh S (1986) An absolute method for the determination of surface tension of liquids using pendent drop profiles. In: Bulletin of Materials Science, 90 (18). 4337 -4340.

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Drop formation at conical tips which is of relevance to metallurgists is investigated based on the principle of minimization of free energy using the variational approach. The dimensionless governing equations for drop profiles are computer solved using the fourth order Runge-Kutta method. For different cone angles, the theoretical plots of XT and ZT vs their ratio, are statistically analyzed, where XT and ZT are the dimensionless x and z coordinates of the drop profile at a plane at the conical tip, perpendicular to the axis of symmetry. Based on the mathematical description of these curves, an absolute method has been proposed for the determination of surface tension of liquids, which is shown to be preferable in comparison with the earlier pendent-drop profile methods.

Item Type: Journal Article
Publication: Bulletin of Materials Science
Publisher: Indian Academy of Sciences
Additional Information: Copyright of this article belongs to Indian Academy of Sciences.
Keywords: Surface tension;drop profiles;regression analysis;Runge-Kutta method.
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 01 Jul 2009 06:46
Last Modified: 01 Jul 2009 06:46
URI: http://eprints.iisc.ac.in/id/eprint/20979

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