About: Thermodynamically consistent formulation of the properties of dry and metastable steam for computations of condensing flow in steam turbines

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	An accurate mathematical formulation of the thermodynamic properties of dry and metastable supersaturated steam is developed. The formulation enables fast computation of all properties, using mass density and specific internal energy as independent variables. This choice of independent variables follows the needs of non-stationary CFD computations of dry and metastable steam flows in steam turbines. The formulation comprises an ideal-gas part and a residual part. The residual part is expressed in a form analogous to the virial equation of state but the coefficients are functions of internal energy, rather than temperature. Here we present a variant retaining only one coefficient of the density series, corresponding to the second virial coefficient. The uncertainties of properties computed from the present formulation only slightly exceed those of the fundamental formulation IAPWS-95. The formulation is valid from 253.15 K to 1073.15 K. Up to pressures given by the isentrope 7.5 kJ/(kg K), the computed properties are within the experimental uncertainties. An accurate mathematical formulation of the thermodynamic properties of dry and metastable supersaturated steam is developed. The formulation enables fast computation of all properties, using mass density and specific internal energy as independent variables. This choice of independent variables follows the needs of non-stationary CFD computations of dry and metastable steam flows in steam turbines. The formulation comprises an ideal-gas part and a residual part. The residual part is expressed in a form analogous to the virial equation of state but the coefficients are functions of internal energy, rather than temperature. Here we present a variant retaining only one coefficient of the density series, corresponding to the second virial coefficient. The uncertainties of properties computed from the present formulation only slightly exceed those of the fundamental formulation IAPWS-95. The formulation is valid from 253.15 K to 1073.15 K. Up to pressures given by the isentrope 7.5 kJ/(kg K), the computed properties are within the experimental uncertainties. (en)
Title	Thermodynamically consistent formulation of the properties of dry and metastable steam for computations of condensing flow in steam turbines Thermodynamically consistent formulation of the properties of dry and metastable steam for computations of condensing flow in steam turbines (en)
skos:prefLabel	Thermodynamically consistent formulation of the properties of dry and metastable steam for computations of condensing flow in steam turbines Thermodynamically consistent formulation of the properties of dry and metastable steam for computations of condensing flow in steam turbines (en)
skos:notation	RIV/61388998:_____/12:00388675!RIV13-AV0-61388998
http://linked.open...avai/predkladatel	Ústav termomechaniky AV ČR, v.v.i.
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GAP101/11/1593), P(IAA200760905), P(LA09011), Z(AV0Z20760514)
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Hrubý, Jan Pátek, Jaroslav Duška, Michal
http://linked.open.../riv/druhVysledku	D - Článek ve sborníku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav termomechaniky AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	174304
http://linked.open...ai/riv/idVysledku	RIV/61388998:_____/12:00388675
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	metastable steam; thermodynamic properties; CFD (en)
http://linked.open.../riv/klicoveSlovo	metastable steam thermodynamic properties CFD
http://linked.open...ontrolniKodProRIV	[9DB647ED882D]
http://linked.open...v/mistoKonaniAkce	Cambridge
http://linked.open...i/riv/mistoVydani	Cambridge
http://linked.open...i/riv/nazevZdroje	Baumann Centenary Conference
http://linked.open...in/vavai/riv/obor	BJ
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...vavai/riv/projekt	Investigation of non-equilibrium steam condensation: A new approach Thermophysical properties of water in unexplored, technologically significant regions International collaboration in the research of the properties of water and aqueous mixtures in the framework of IAPWS
http://linked.open...UplatneniVysledku	2012
http://linked.open...iv/tvurceVysledku	Hrubý, Jan Pátek, Jaroslav Duška, Michal
http://linked.open...vavai/riv/typAkce	WRD - Světová
http://linked.open.../riv/zahajeniAkce	2012-09-10 (xsd:date)
http://linked.open...n/vavai/riv/zamer	Complex dynamical systems in thermodynamics, fluid and solid mechanics
number of pages	12 (xsd:int)
http://purl.org/ne...btex#hasPublisher	Cambridge University Engineering
https://schema.org/isbn	978-0-903428-35-4
is http://linked.open...avai/riv/vysledek of	Thermodynamically consistent formulation of the properties of dry and metastable steam for computations of condensing flow in steam turbines

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