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Statements

Subject Item
n2:RIV%2F61388998%3A_____%2F12%3A00388675%21RIV13-AV0-61388998
rdf:type
skos:Concept n14:Vysledek
dcterms: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.
dcterms: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
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
skos:notation
RIV/61388998:_____/12:00388675!RIV13-AV0-61388998
n14:predkladatel
n19:ico%3A61388998
n3:aktivita
n5:Z n5:P
n3:aktivity
P(GAP101/11/1593), P(IAA200760905), P(LA09011), Z(AV0Z20760514)
n3:dodaniDat
n10:2013
n3:domaciTvurceVysledku
n9:6503039 n9:8757267 n9:1734601
n3:druhVysledku
n12:D
n3:duvernostUdaju
n22:S
n3:entitaPredkladatele
n18:predkladatel
n3:idSjednocenehoVysledku
174304
n3:idVysledku
RIV/61388998:_____/12:00388675
n3:jazykVysledku
n17:eng
n3:klicovaSlova
metastable steam; thermodynamic properties; CFD
n3:klicoveSlovo
n7:CFD n7:thermodynamic%20properties n7:metastable%20steam
n3:kontrolniKodProRIV
[9DB647ED882D]
n3:mistoKonaniAkce
Cambridge
n3:mistoVydani
Cambridge
n3:nazevZdroje
Baumann Centenary Conference
n3:obor
n21:BJ
n3:pocetDomacichTvurcuVysledku
3
n3:pocetTvurcuVysledku
3
n3:projekt
n6:IAA200760905 n6:GAP101%2F11%2F1593 n6:LA09011
n3:rokUplatneniVysledku
n10:2012
n3:tvurceVysledku
Pátek, Jaroslav Duška, Michal Hrubý, Jan
n3:typAkce
n11:WRD
n3:zahajeniAkce
2012-09-10+02:00
n3:zamer
n20:AV0Z20760514
s:numberOfPages
12
n13:hasPublisher
Cambridge University Engineering
n16:isbn
978-0-903428-35-4