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Original title:
An apparatus with a horizontal capillary tube intended for measurement of the surface tension of supercooled liquids
Authors: Vinš, Václav ; Hošek, Jan ; Hykl, Jiří ; Hrubý, Jan
Document type: Papers
Conference/Event: Experimental Fluid Mechanics 2014, Český Krumlov (CZ), 2014-11-18 / 2014-11-21
Year: 2015
Language: eng
Abstract: New experimental apparatus for measurement of the surface tension of liquids under the metastable supercooled state has been designed and assembled in the study. The measuring technique is similar to the method employed by P.T. Hacker [NACA TN 2510, 1951]. A short liquid thread of the liquid sample was located in a horizontal capillary tube partly placed in a temperature-controlled chamber. One end of the capillary tube was connected to a setup with inert gas which allowed for precise tuning of the gas overpressure. The open end of the capillary tube was precisely grinded and polished in order to assure its planarity and perpendicularity. The liquid meniscus at the open end was illuminated by a laser beam and observed by a digital camera. Application of an increasing overpressure of the inert gas at the inner meniscus of the liquid thread caused variation of the outer meniscus such that it gradually changed from concave to flat and subsequently convex shape. The surface tension at the temperature of the inner meniscus could be evaluated from the overpressure corresponding to exactly planar outer meniscus.
Keywords: horizontal technique; supercooled water; surface tension
Project no.: M100761201
Funding provider: Rada Programu interní podpory projektů mezinárodní spolupráce AV ČR
Host item entry: EFM14 - EXPERIMENTAL FLUID MECHANICS 2014, ISSN 2100-014X
Institution: Institute of Thermomechanics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0242217
Permalink: http://www.nusl.cz/ntk/nusl-180375
The record appears in these collections:
Research > Institutes ASCR > Institute of Thermomechanics
Conference materials > Papers
Authors: Vinš, Václav ; Hošek, Jan ; Hykl, Jiří ; Hrubý, Jan
Document type: Papers
Conference/Event: Experimental Fluid Mechanics 2014, Český Krumlov (CZ), 2014-11-18 / 2014-11-21
Year: 2015
Language: eng
Abstract: New experimental apparatus for measurement of the surface tension of liquids under the metastable supercooled state has been designed and assembled in the study. The measuring technique is similar to the method employed by P.T. Hacker [NACA TN 2510, 1951]. A short liquid thread of the liquid sample was located in a horizontal capillary tube partly placed in a temperature-controlled chamber. One end of the capillary tube was connected to a setup with inert gas which allowed for precise tuning of the gas overpressure. The open end of the capillary tube was precisely grinded and polished in order to assure its planarity and perpendicularity. The liquid meniscus at the open end was illuminated by a laser beam and observed by a digital camera. Application of an increasing overpressure of the inert gas at the inner meniscus of the liquid thread caused variation of the outer meniscus such that it gradually changed from concave to flat and subsequently convex shape. The surface tension at the temperature of the inner meniscus could be evaluated from the overpressure corresponding to exactly planar outer meniscus.
Keywords: horizontal technique; supercooled water; surface tension
Project no.: M100761201
Funding provider: Rada Programu interní podpory projektů mezinárodní spolupráce AV ČR
Host item entry: EFM14 - EXPERIMENTAL FLUID MECHANICS 2014, ISSN 2100-014X
Institution: Institute of Thermomechanics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0242217
Permalink: http://www.nusl.cz/ntk/nusl-180375
The record appears in these collections:
Research > Institutes ASCR > Institute of Thermomechanics
Conference materials > Papers
Record created 2015-01-14, last modified 2021-11-24