Articles with "equation state" as a keyword



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On dark matter as a geometric effect in the galactic halo

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Published in 2021 at "Astrophysics and Space Science"

DOI: 10.1007/s10509-021-03997-5

Abstract: We obtain more straightforwardly some features of dark matter distribution in the halos of galaxies by considering the spherically symmetric space-time, which satisfies the flat rotational curve condition, and the geometric equation of state resulting… read more here.

Keywords: matter; dark matter; galactic halo; equation state ... See more keywords

Equation of State for Hot Quark Matter with Neutrino Confinement

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Published in 2018 at "Astrophysics"

DOI: 10.1007/s10511-018-9553-6

Abstract: The equation of state and composition of hot strange quark matter that is opaque to neutrinos are determined. This study is based on the MIT quark bag model. Three different variants of the lepton population… read more here.

Keywords: neutrino; equation state; quark; hot quark ... See more keywords

A parallel framework for a multipoint flux mixed finite element equation of state compositional flow simulator

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Published in 2017 at "Computational Geosciences"

DOI: 10.1007/s10596-017-9683-7

Abstract: Mathematical models of physical problems are becoming increasingly complex and computationally intensive. At the same time, computing hardware is becoming more parallelized with an increasing number of cores promoting simultaneous tasks. In this work, we… read more here.

Keywords: flux mixed; compositional flow; equation state; multipoint flux ... See more keywords

Structure of compact stars in R-squared Palatini gravity

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Published in 2017 at "General Relativity and Gravitation"

DOI: 10.1007/s10714-016-2182-7

Abstract: We analyse configurations of neutron stars in the so-called R-squared gravity in the Palatini formalism. Using a realistic equation of state we show that the mass–radius configurations are lighter than their counterparts in General Relativity.… read more here.

Keywords: compact stars; mass; equation state; general relativity ... See more keywords

Reconstructions of the dark-energy equation of state and the inflationary potential

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Published in 2018 at "General Relativity and Gravitation"

DOI: 10.1007/s10714-018-2402-4

Abstract: We use a mathematical approach based on the constraints systems in order to reconstruct the equation of state and the inflationary potential for the inflaton field from the observed spectral indices for the density perturbations… read more here.

Keywords: left right; state inflationary; inflationary potential; equation state ... See more keywords

Behavior of anisotropic fluids with Chaplygin equation of state in Buchdahl spacetime

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Published in 2021 at "General Relativity and Gravitation"

DOI: 10.1007/s10714-021-02883-3

Abstract: In the present study we have proposed a new model of an anisotropic compact star which admits the Chaplygin equation of state. For this purpose, we consider Buchdahl ansatz. We obtain the solution of proposed… read more here.

Keywords: anisotropic; chaplygin equation; equation; model ... See more keywords

Improving the LKP-SJT Equation of State: Application to Alkanes, Carbon Dioxide, and Their Mixtures

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Published in 2025 at "International Journal of Thermophysics"

DOI: 10.1007/s10765-024-03493-2

Abstract: The recently introduced modification of the Lee-Kesler-Plöcker equation of state, LKP-SJT, has been further developed, and the results are presented. The new version includes an enhancement of the original approach for calculating the compressibility factor… read more here.

Keywords: carbon dioxide; equation state; lkp sjt;

An Accurate Thermodynamic Model to Characterise Dissociating N2O4 at Vapour–Liquid Equilibrium States

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Published in 2025 at "International Journal of Thermophysics"

DOI: 10.1007/s10765-025-03565-x

Abstract: A new thermodynamic model is presented, capable of accurately representing the vapour–liquid equilibrium pressures and densities, and liquid phase densities and enthalpies of dissociating dinitrogen tetroxide (N2O4 ⇄ 2NO2). The model is based on the Peng-Robinson equation… read more here.

Keywords: vapour liquid; model; liquid equilibrium; equation state ... See more keywords

Thermodynamic Consistency Test of Vapor–liquid Equilibrium Data of Binary Systems Including Carbon Dioxide (CO2) and Ionic Liquids Using the Generic Redlich–Kwong Equation of State

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Published in 2020 at "Journal of Solution Chemistry"

DOI: 10.1007/s10953-020-00963-7

Abstract: The thermodynamic consistency test of solubility P–T–x data for binary mixtures including carbon dioxide (CO2) + a room temperature ionic liquid has been investigated. Experimental solubility data taken from the open literature for 32 binary mixtures of… read more here.

Keywords: thermodynamic consistency; consistency test; consistency; equation state ... See more keywords

Prediction of critical temperature, critical pressure and acentric factor of some ionic liquids using Patel-Teja equation of state based on genetic algorithm

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Published in 2017 at "Korean Journal of Chemical Engineering"

DOI: 10.1007/s11814-017-0166-2

Abstract: Critical properties and acentric factor (ω) of 31 ionic liquids (ILs) were obtained by using vapor-liquid equilibrium data of solvent+IL consisting of P-T and P-x experimental data, based on three-parameter Patel-Teja equation of state and… read more here.

Keywords: equation state; factor ionic; equation; ionic liquids ... See more keywords
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A new equation of state to predict S-CO2 flow with real gas effects

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Published in 2018 at "Journal of Mechanical Science and Technology"

DOI: 10.1007/s12206-018-0212-y

Abstract: The accuracy of the thermodynamic properties prediction from the different Equation of state (EOS) varies upon the range of temperature and pressure. Despite the variety of EOS available, there is no de facto for selecting… read more here.

Keywords: flow real; equation state; co2; real gas ... See more keywords