Micro-scale Testing of Capillary Bridge Evolution due to Evaporation

  • Boleslaw Mielniczuk
  • Tomasz Hueckel
  • Moulay Said El Youssoufi
Part of the Springer Series in Geomechanics and Geoengineering book series (SSGG)

Abstract

Capillary bridge evolution between two fixed glass spheres during its natural convective evaporation is examined experimentally. For comparison extension tests were also carried out. The calibrated balance recording and digital image processing allow monitoring of a number of key variables of the process: the resultant capillary force, the water mass loss, radii of the bridge curvature. On that basis evaporating surface area, suction and surface tension force, interparticle force, axial stress vs (relative) volumetric mass loss are calculated. Testing shows a gradual decrease of suction within bridges down to zero and into a positive pressure range before a two step failure including a formation of a water thread according to a traditional Rayleigh instability pattern followed by a simultaneous rupture at two points of the lowest (negative) total (Gauss) curvatures of the bridge surface.

Keywords

Capillary Force Liquid Bridge Surface Tension Force Laplace Pressure Capillary Bridge 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Boleslaw Mielniczuk
    • 1
    • 2
  • Tomasz Hueckel
    • 3
  • Moulay Said El Youssoufi
    • 1
    • 2
  1. 1.Laboratoire de Mécanique et Génie Civil UMR UM2-CNRS 5508Université Montpellier 2Montpellier Cedex 5France
  2. 2.Laboratoire de Micromécanique et d’Intégrité des Structures, MIST LaboratoryIRSN, CNRS UMR 5508, Université Montpellier 2MontpellierFrance
  3. 3.Duke UniversityDurhamUSA

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