Spinodal lines and equations of state: A review

Lienhard, J. H.; Shamsundar, N.; Biney, P.O.

doi:10.1016/0029-5493(86)90056-7

Cited by 32 publications

(14 citation statements)

References 18 publications

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“…The careful analysis of a spinodal's paradigm can be found in two consecu-tive reviews reported by Lienhard and co-authors [1,2]. To the best of our know-ledge, these relatively old works represent until now the state of the art, at least, in the problem of a unified EOS.…”

Section: Background Of a Unified Eos And Classical Metastability [1 2]mentioning

confidence: 99%

“…Two conventional theoretical directions cannot be used to attack this complex problem. They are based either on the phenomenology of an equilibrium unified EOS [1,2] or on the its direct simulation adopted in the two-phase region by the special methodology of a restricted ensemble [3,4]. We refer now an interested reader to the above-cited comprehensive investigations of classical i.e.…”

Section: Introductionmentioning

confidence: 99%

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Mesoscopic metastable liquid in congruent vapor-liquid diagram of argon from about zero up to boyle`s temperature (review of FT-model)

Роганков¹,

Швець²,

Rogankov³

2021

ФАС

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Such paradigms of the coupled classical metastability and nonclassical criticality as the existence of a unified EOS (common for both gas and liquid phases) with its mean-field (mf), so-called Andrews-van der Waals’ critical point (CP) should be questioned to recognize the realistic stratified structure of a mesoscopic liquid phase. It exists supposedly in the wide range of temperatures located between about zero , K and up to the singular first Boyle’s point . Its opposite, also singular second Boyle’s point corresponds to the alternative origin for the crossover continuous bounds separating the specific structural strata of a mesoscopic liquid. The region of a heterogeneous l-phase spanning the whole temperature range can be termed the non-Gibbsian phase (due to its discrete cluster-like structure) without any appeals to the concept of a spinodal decomposition. The respective metastable liquid stratum is formed by three segments of supercritical , subcritical and sublimation metastable states of a formally incompressible liquid constrained by the pair of fixed extensive parameters (N,V). Its location on the CVL-diagram is restricted by the new introduced here ml-bound and by the known Zeno-line (ZL) bound. Thus, all above-mentioned strata belong to the region of soft fluid with the dominance of interparticle attraction. The remaining parts of CVL-diagram are spanned either by the real gas state-points and solid state-points (crystalline and/or amorphous) or by the region of hard fluid in the classification proposed by Ben-Amotz and Herschbach.

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Section: Background Of a Unified Eos And Classical Metastability [1 2]mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Mesoscopic metastable liquid in congruent vapor-liquid diagram of argon from about zero up to boyle`s temperature (review of FT-model)

Роганков¹,

Швець²,

Rogankov³

2021

ФАС

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“…One should not consider such ridge as the "experimental discovery" which "seems to the locus of a higher-order phase transition". Moreover [20,21]. The main tool for its description in term of FT2-region is the reference model of vdW-fluid (Table 1) refined by FT-EOS (11)(12)(13).…”

Section: The Comparison Of Ftmentioning

confidence: 99%

Supercritical heterogeneous nanostructure of fluids. Part 1. Diagram of fluctuation transitions in non-gibbsian phases

Роганков¹,

Швець²,

Rogankov³

et al. 2019

ФАС

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New concept of a supercritical fluid (SCF) region is proposed to recognize the set of the recent experimental observations and the numerical model results, in which the conventional asymptotic scaling theory and its crossover extension achieve the limit of applicability. An existence of the heterogeneous steady lattice-type nanostructure in the wide ranges of supercritical parameters termed the non-gibbsian fluid (NGF)-phase was hypothesized by one of authors (V.B.R.) in the framework of FT (fluctuational thermodynamics)-model. It was argued by FT-model that the similar NGF-phase exists also below the critical temperature in any real finite-volume VLE-transition. The present work establishes the location of exact boundaries for the supercritical lattice-type NGF-phase confirmed by the set of recently published experimental results and simulations. In brief, the total supercritical region consists of the dilute gas-like (gl) gibbsian (homogeneous) phase (GPh) and the dense liquid-like (ll) gibbsian (homogeneous) phase (GPh) separated one from another by the heterogeneous (at least, in nanoscales of a finite volume) vapor-like (vl) NGF-phase. The practical usage of a such structure may be quite promising in many areas of applications. It is certainly non-restricted by only the known advances of a supercritical extraction processing.

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“…The accurate knowledge of rewetting temperature and, as well as, the time required to the rewetting take place (rewetting delay) are essential for enhanced of the quenching processes and the development in ultra-fast cooling technology. The limit condition for water remains liquid is the critical temperature of 374°C and without undergoes instantaneous vaporization [1] is 325°C [2], at atmospheric pressure. However, a number of studies have reported rewetting taking place on surface temperature exceeding by far the critical point of water.…”

Section: Introductionmentioning

confidence: 99%

Rewetting and Boiling in Water Jet Impingement on High Temperature Steel Surface

Leocadio¹,

Geld²,

Passos³

2018

ABM Proceedings

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For the first time, high-speed imaging (20 kfps) from the boiling phenomenon within water jet impingement zone during quenching of a high temperature (300°C-900°C) steel plate was observed. The inverse heat conduction method gave the heat flux and the temperature at the plate surface from temperatures measured with thermocouples inserted into the plate. Surprisingly, gas bubbles, from a degassing process, on top of a thin vapor film have been observed. Surface roughness induces the occurrence of rewetting on surface temperatures above the critical point of water. For an initial surface temperature of 300°C, rewetting phenomenon took place without occurrence of vapor film, but for surfaces at or above 450°C, even in very high jet subcooling of 80K, vapor film formation was observed. In spite of high subcooling and velocity of jet, an intense vapor bubble activity was observed within wet region and ceased at surface temperature of 246°C for subcooling of 80K. Temperature and time of rewetting are strongly affected by the initial surface temperature and jet subcooling and, less intensely, by jet velocity.

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Spinodal lines and equations of state: A review

Cited by 32 publications

References 18 publications

Mesoscopic metastable liquid in congruent vapor-liquid diagram of argon from about zero up to boyle`s temperature (review of FT-model)

Mesoscopic metastable liquid in congruent vapor-liquid diagram of argon from about zero up to boyle`s temperature (review of FT-model)

Supercritical heterogeneous nanostructure of fluids. Part 1. Diagram of fluctuation transitions in non-gibbsian phases

Rewetting and Boiling in Water Jet Impingement on High Temperature Steel Surface

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