Numerical Solution of Wet Steam Flow through Blade Cascade
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F16%3A00303625" target="_blank" >RIV/68407700:21220/16:00303625 - isvavai.cz</a>
Výsledek na webu
<a href="http://dx.doi.org/10.4028/www.scientific.net/AMM.821.31" target="_blank" >http://dx.doi.org/10.4028/www.scientific.net/AMM.821.31</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.4028/www.scientific.net/AMM.821.31" target="_blank" >10.4028/www.scientific.net/AMM.821.31</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Numerical Solution of Wet Steam Flow through Blade Cascade
Popis výsledku v původním jazyce
The paper concerns with the numerical modeling of wet steam flow through a blade cascade in transonic regime with non-equilibrium condensation in 2D. Real thermodynamics of vapor phase is implemented in the way which mostly avoid iterations in order to calculate thermodynamic properties. This equation of state is represented by the function for non-dimensional entropy with independent variables scaled density and scaled internal energy. Other equations of state are used for comparison, namely special gas equation which comes from IAPWS-95 formulation and simple pseudo perfect gas relation. We applied simple homogeneous non-equilibrium approach to model two-phase flow. Laminar compressible Navier-Stokes system of equations is used for the mixture properties. Liquid phase is described by the standard method of moments of droplet number distribution function. We consider obtained numerical results to be in good agreement with the measured data. We note the fact that robust and accurate closure of supplementary liquid system (nucleation rate and droplet growth model) is still not available and most often ad-hoc corrections are proposed by the authors. Results show differences among used equations of state as well. This is apparent mainly in the vicinity of condensation shock region on the suction side.
Název v anglickém jazyce
Numerical Solution of Wet Steam Flow through Blade Cascade
Popis výsledku anglicky
The paper concerns with the numerical modeling of wet steam flow through a blade cascade in transonic regime with non-equilibrium condensation in 2D. Real thermodynamics of vapor phase is implemented in the way which mostly avoid iterations in order to calculate thermodynamic properties. This equation of state is represented by the function for non-dimensional entropy with independent variables scaled density and scaled internal energy. Other equations of state are used for comparison, namely special gas equation which comes from IAPWS-95 formulation and simple pseudo perfect gas relation. We applied simple homogeneous non-equilibrium approach to model two-phase flow. Laminar compressible Navier-Stokes system of equations is used for the mixture properties. Liquid phase is described by the standard method of moments of droplet number distribution function. We consider obtained numerical results to be in good agreement with the measured data. We note the fact that robust and accurate closure of supplementary liquid system (nucleation rate and droplet growth model) is still not available and most often ad-hoc corrections are proposed by the authors. Results show differences among used equations of state as well. This is apparent mainly in the vicinity of condensation shock region on the suction side.
Klasifikace
Druh
D - Stať ve sborníku
CEP obor
—
OECD FORD obor
10305 - Fluids and plasma physics (including surface physics)
Návaznosti výsledku
Projekt
<a href="/cs/project/GAP101%2F11%2F1593" target="_blank" >GAP101/11/1593: Výzkum nerovnovážné kondenzace páry - nový přístup</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2016
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název statě ve sborníku
Engineering Mechanics 2015
ISBN
978-3-03835-700-1
ISSN
1660-9336
e-ISSN
—
Počet stran výsledku
8
Strana od-do
31-38
Název nakladatele
Trans Tech Publications Inc.
Místo vydání
Pfaffikon
Místo konání akce
Svratka
Datum konání akce
11. 5. 2015
Typ akce podle státní příslušnosti
WRD - Celosvětová akce
Kód UT WoS článku
—