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Bulletin of Materials Science

, Volume 8, Issue 2, pp 217–224 | Cite as

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

  • S Ramesh Babu
Article

Abstract

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 ofX T andZ T vs their ratio, are statistically analyzed, whereX T andZ T are the dimensionlessx andz 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.

Keywords

Surface tension drop profiles regression analysis Runge-Kutta method 

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Copyright information

© Indian Academy of Sciences 1986

Authors and Affiliations

  • S Ramesh Babu
    • 1
  1. 1.Department of MetallurgyIndian Institute of ScienceBangaloreIndia

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