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Proceedings of Latin American & Caribbean Petroleum Engineering Conference, 2007
Summary To predict the phase and volumetric behavior of hydrocarbon mixtures by using an Equation of State; e.g. the Peng and Robinson Equation of State "PREOS", the critical properties in terms of the critical pressure "pc" and critical temperature "Tc" as well as the acentric factor "ω" must be given for each component present in the ...
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Summary To predict the phase and volumetric behavior of hydrocarbon mixtures by using an Equation of State; e.g. the Peng and Robinson Equation of State "PREOS", the critical properties in terms of the critical pressure "pc" and critical temperature "Tc" as well as the acentric factor "ω" must be given for each component present in the ...
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Development of a Multiphase Beryllium Equation of State and Physics-based Variations.
Journal of Physical Chemistry A, 2021We construct a family of beryllium (Be) multiphase equation of state (EOS) models that consists of a baseline ("optimal") EOS and variations on the baseline to account for physics-based uncertainties. The Be baseline EOS is constructed to reproduce a set
Christine J Wu +6 more
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2019
At the critical point one has \(\left( \partial p/\partial V_M\right) _T =0\) and \(\left( \partial ^2 p/\partial V_M^2\right) _T=0\). By calculating the derivative of the van der Waals equation with respect to \(V_M\), we find that the first condition reads \(p_c-a/V_{Mc}^2+2ab/V_{Mc}^3=0\).
Primož Ziherl, Gregor Skačej
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At the critical point one has \(\left( \partial p/\partial V_M\right) _T =0\) and \(\left( \partial ^2 p/\partial V_M^2\right) _T=0\). By calculating the derivative of the van der Waals equation with respect to \(V_M\), we find that the first condition reads \(p_c-a/V_{Mc}^2+2ab/V_{Mc}^3=0\).
Primož Ziherl, Gregor Skačej
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Journal of Mathematics and Physics, 2021
The Riemann solutions for a simplified two-phase flow model with the logarithmic equation of state are obtained in fully explicit forms for all four possible different structures. The intrinsic phenomena of cavitation and concentration are identified and
M. Sun
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The Riemann solutions for a simplified two-phase flow model with the logarithmic equation of state are obtained in fully explicit forms for all four possible different structures. The intrinsic phenomena of cavitation and concentration are identified and
M. Sun
semanticscholar +1 more source
2004
The equations of state appropriate to the interiors of most stars are simple in one major respect: they may be derived using the assumption that the radiation, gas, fluid, or even solid, is in a state of local thermodynamic equilibrium or LTE. By this we mean that at a particular position in the star complete thermodynamic equilibrium is as very nearly
Carl J. Hansen +2 more
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The equations of state appropriate to the interiors of most stars are simple in one major respect: they may be derived using the assumption that the radiation, gas, fluid, or even solid, is in a state of local thermodynamic equilibrium or LTE. By this we mean that at a particular position in the star complete thermodynamic equilibrium is as very nearly
Carl J. Hansen +2 more
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The Equation of State of Helium
Physical Review, 1931A brief review of the statistical theory of the equation of state is presented. Upon the basis of a recent quantum mechanical calculation of the interatomic energy, the second virial coefficient of helium has been calculated. With the use of the theoretically determined virial coefficient some properties of helium have been computed.
John G. Kirkwood, Frederick G. Keyes
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Nuclear Physics A, 2014
Abstract The quark–gluon plasma (QGP), the deconfined high-temperature phase of QCD, is currently under extensive investigation in heavy-ion collision experiments at RHIC and LHC. The transition from the hadronic, low-temperature phase to the QGP is a rapid crossover, manifested by a significant change in bulk thermodynamic quantities.
Bazavov, Alexei +28 more
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Abstract The quark–gluon plasma (QGP), the deconfined high-temperature phase of QCD, is currently under extensive investigation in heavy-ion collision experiments at RHIC and LHC. The transition from the hadronic, low-temperature phase to the QGP is a rapid crossover, manifested by a significant change in bulk thermodynamic quantities.
Bazavov, Alexei +28 more
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2014
This chapter introduces the equation of state, defines the mean molecular weight, discusses the validity of the perfect gas hypothesis, and presents several examples regarding stellar photospheres.
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This chapter introduces the equation of state, defines the mean molecular weight, discusses the validity of the perfect gas hypothesis, and presents several examples regarding stellar photospheres.
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Derivatives for the equations of state
2007Derivation of partial derivatives for isothermal multi-component mixtures needed for development of universal models for multi-phase multi-component flows is presented. The equations of state and the derivative approximations as functions of temperature and pressure for the elementary mixture constituents are assumed to be known.
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1989
Let us consider a one-component system such as discussed in Section 4.1. At any given temperature, the a(V) curve has a last phase transition region; at volumes larger than those, no more phase transitions occur and the system is said to be a gas. At temperatures above the critical temperature, this definition implies that the gas phase is reached by ...
Gianni Astarita, Gianni Astarita
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Let us consider a one-component system such as discussed in Section 4.1. At any given temperature, the a(V) curve has a last phase transition region; at volumes larger than those, no more phase transitions occur and the system is said to be a gas. At temperatures above the critical temperature, this definition implies that the gas phase is reached by ...
Gianni Astarita, Gianni Astarita
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