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Název:
An apparatus with a horizontal capillary tube intended for measurement of the surface tension of supercooled liquids
Autoři: Vinš, Václav ; Hošek, Jan ; Hykl, Jiří ; Hrubý, Jan
Typ dokumentu: Příspěvky z konference
Konference/Akce: Experimental Fluid Mechanics 2014, Český Krumlov (CZ), 2014-11-18 / 2014-11-21
Rok: 2015
Jazyk: eng
Abstrakt: 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.
Klíčová slova: horizontal technique; supercooled water; surface tension
Číslo projektu: M100761201
Poskytovatel projektu: Rada Programu interní podpory projektů mezinárodní spolupráce AV ČR
Zdrojový dokument: EFM14 - EXPERIMENTAL FLUID MECHANICS 2014, ISSN 2100-014X
Instituce: Ústav termomechaniky AV ČR (web)
Informace o dostupnosti dokumentu: Dokument je dostupný v příslušném ústavu Akademie věd ČR.
Původní záznam: http://hdl.handle.net/11104/0242217
Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-180375
Záznam je zařazen do těchto sbírek:
Věda a výzkum > AV ČR > Ústav termomechaniky
Konferenční materiály > Příspěvky z konference
Autoři: Vinš, Václav ; Hošek, Jan ; Hykl, Jiří ; Hrubý, Jan
Typ dokumentu: Příspěvky z konference
Konference/Akce: Experimental Fluid Mechanics 2014, Český Krumlov (CZ), 2014-11-18 / 2014-11-21
Rok: 2015
Jazyk: eng
Abstrakt: 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.
Klíčová slova: horizontal technique; supercooled water; surface tension
Číslo projektu: M100761201
Poskytovatel projektu: Rada Programu interní podpory projektů mezinárodní spolupráce AV ČR
Zdrojový dokument: EFM14 - EXPERIMENTAL FLUID MECHANICS 2014, ISSN 2100-014X
Instituce: Ústav termomechaniky AV ČR (web)
Informace o dostupnosti dokumentu: Dokument je dostupný v příslušném ústavu Akademie věd ČR.
Původní záznam: http://hdl.handle.net/11104/0242217
Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-180375
Záznam je zařazen do těchto sbírek:
Věda a výzkum > AV ČR > Ústav termomechaniky
Konferenční materiály > Příspěvky z konference
Záznam vytvořen dne 2015-01-14, naposledy upraven 2021-11-24.