Description of the metastable liquid region with quintic and quasi-quintic equation of states

A. Imre, Axel Groniewsky, Gábor Györke

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2 Citations (Scopus)

Abstract

Experimentally determined tensile strength of water can be measured mainly by two methods: by the application of high-intensity ultrasound or by the cooling of liquid-filled inclusions. The tensile strength around room temperature given by the two methods differs remarkably; for the ultrasonic method it is around –30 MPa, while for the inclusion method it is around or below –100 MPa. The controversy can be explained by assuming the effect of an already vanished low-temperature critical point, i.e., the existence of a second Widom region observable only under negative pressures. This Widom region is responsible for the increase of the isothermal compressibility, which—being the response function for pressure perturbations—can cause unexpected homogeneous nucleation in a region, still far enough from the near-spinodal metastable liquid states. Therefore—depending on the experimental paths—one can obtain nucleation in very deep negative pressures (near-spinodal region) or in a much higher pressure values, related to this new Widom region. A quintic equation of state (where quantic means that the highest term in volume is V5), similar to the van der Waals equation is proposed, which can qualitatively describe the expected anomalies.

Original languageEnglish
Pages (from-to)173-185
Number of pages13
JournalInterfacial Phenomena and Heat Transfer
Volume5
Issue number3 Special issue
DOIs
Publication statusPublished - Jan 1 2017

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Keywords

  • Attainable superheat
  • Cavitation
  • IAPWS
  • Negative pressure
  • Nucleation
  • Spinodal
  • Tensile strength
  • Water

ASJC Scopus subject areas

  • Surfaces and Interfaces
  • Fluid Flow and Transfer Processes

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