An analytical formulation of thermodynamic properties of dry and metastable steam suitable for computational fluid dynamics modelling of steam turbine flows

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F14%3A00424636" target="_blank" >RIV/61388998:_____/14:00424636 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1177/0957650913509088" target="_blank" >http://dx.doi.org/10.1177/0957650913509088</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1177/0957650913509088" target="_blank" >10.1177/0957650913509088</a>

Jazyk výsledku

angličtina

Název v původním jazyce

An analytical formulation of thermodynamic properties of dry and metastable steam suitable for computational fluid dynamics modelling of steam turbine flows

Popis výsledku v původním jazyce

Application of computational fluid dynamics to real steam flows including non-equilibrium condensing flows requires an accurate and, at the same time, computationally inexpensive formulation of thermodynamic properties of steam. The present formulation enables fast computation of all thermodynamic properties, using mass density and specific internal energy as independent variables. 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. 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. Beyond this limit, the accuracy continuously decreases as it can be determined from presented deviation plots.

Název v anglickém jazyce

An analytical formulation of thermodynamic properties of dry and metastable steam suitable for computational fluid dynamics modelling of steam turbine flows

Popis výsledku anglicky

Application of computational fluid dynamics to real steam flows including non-equilibrium condensing flows requires an accurate and, at the same time, computationally inexpensive formulation of thermodynamic properties of steam. The present formulation enables fast computation of all thermodynamic properties, using mass density and specific internal energy as independent variables. 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. 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. Beyond this limit, the accuracy continuously decreases as it can be determined from presented deviation plots.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BJ - Termodynamika

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Proceedings of the Institution of Mechanical Engineers Part A-Journal of Power and Energy

ISSN

0957-6509

e-ISSN

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Svazek periodika

228

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

120-128

Kód UT WoS článku

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EID výsledku v databázi Scopus

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