Development and Experimental Validation of Real Fluid Models for CFD Calculation of ORC and Steam Turbine Flows

The article describes an interpolation–analytical method of reconstruction of the IAPWS-95 equations of state and the modified Benedict–Webb–Rubin equations of state with 32 terms (mBWR32). The method enables us to provide the thermodynamic closure in 3D computational fluid dynamics (CFD) calculatio...

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Autores principales:	Andrii Rusanov, Roman Rusanov, Piotr Klonowicz, Piotr Lampart, Grzegorz Żywica, Aleksandra Borsukiewicz
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	3D CFD equation of state turbine flow steam turbine ORC turbine Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Acceso en línea:	https://doaj.org/article/e0686b10a02c493ab6f0ff8bce7500db
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spelling	oai:doaj.org-article:e0686b10a02c493ab6f0ff8bce7500db2021-11-25T18:14:24ZDevelopment and Experimental Validation of Real Fluid Models for CFD Calculation of ORC and Steam Turbine Flows10.3390/ma142268791996-1944https://doaj.org/article/e0686b10a02c493ab6f0ff8bce7500db2021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/22/6879https://doaj.org/toc/1996-1944The article describes an interpolation–analytical method of reconstruction of the IAPWS-95 equations of state and the modified Benedict–Webb–Rubin equations of state with 32 terms (mBWR32). The method enables us to provide the thermodynamic closure in 3D computational fluid dynamics (CFD) calculations of turbomachinery flows with real working media, such as steam and Organic Rankine Cycle (ORC) fluids. The described approach allows for the sufficient accuracy of 3D flow calculations and does not require a significant increase in computational cost over perfect gas calculations. The method is validated against experimental data from measurements and compared with computational results from the model using the Tammann equation of state. Three turbine blading systems are considered—a multi-stage configuration from a low-pressure cylinder of a large-power steam turbine and two ORC microturbines working with organic media HFE7100 and R227ea. The calculation results obtained using the described method of approximation of the IAPWS-95 and mBWR32 equations exhibit satisfactory agreement with the experimental data, considering pressures, temperatures and enthalpies in key sections, as well as turbine power and efficiency in a wide range of changing thermodynamic parameters. In contrast, the Tammann equation of state provides acceptable results only for relatively small changes of thermodynamic parameters.Andrii RusanovRoman RusanovPiotr KlonowiczPiotr LampartGrzegorz ŻywicaAleksandra BorsukiewiczMDPI AGarticle3D CFDequation of stateturbine flowsteam turbineORC turbineTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6879, p 6879 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	3D CFD equation of state turbine flow steam turbine ORC turbine Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
spellingShingle	3D CFD equation of state turbine flow steam turbine ORC turbine Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Andrii Rusanov Roman Rusanov Piotr Klonowicz Piotr Lampart Grzegorz Żywica Aleksandra Borsukiewicz Development and Experimental Validation of Real Fluid Models for CFD Calculation of ORC and Steam Turbine Flows
description	The article describes an interpolation–analytical method of reconstruction of the IAPWS-95 equations of state and the modified Benedict–Webb–Rubin equations of state with 32 terms (mBWR32). The method enables us to provide the thermodynamic closure in 3D computational fluid dynamics (CFD) calculations of turbomachinery flows with real working media, such as steam and Organic Rankine Cycle (ORC) fluids. The described approach allows for the sufficient accuracy of 3D flow calculations and does not require a significant increase in computational cost over perfect gas calculations. The method is validated against experimental data from measurements and compared with computational results from the model using the Tammann equation of state. Three turbine blading systems are considered—a multi-stage configuration from a low-pressure cylinder of a large-power steam turbine and two ORC microturbines working with organic media HFE7100 and R227ea. The calculation results obtained using the described method of approximation of the IAPWS-95 and mBWR32 equations exhibit satisfactory agreement with the experimental data, considering pressures, temperatures and enthalpies in key sections, as well as turbine power and efficiency in a wide range of changing thermodynamic parameters. In contrast, the Tammann equation of state provides acceptable results only for relatively small changes of thermodynamic parameters.
format	article
author	Andrii Rusanov Roman Rusanov Piotr Klonowicz Piotr Lampart Grzegorz Żywica Aleksandra Borsukiewicz
author_facet	Andrii Rusanov Roman Rusanov Piotr Klonowicz Piotr Lampart Grzegorz Żywica Aleksandra Borsukiewicz
author_sort	Andrii Rusanov
title	Development and Experimental Validation of Real Fluid Models for CFD Calculation of ORC and Steam Turbine Flows
title_short	Development and Experimental Validation of Real Fluid Models for CFD Calculation of ORC and Steam Turbine Flows
title_full	Development and Experimental Validation of Real Fluid Models for CFD Calculation of ORC and Steam Turbine Flows
title_fullStr	Development and Experimental Validation of Real Fluid Models for CFD Calculation of ORC and Steam Turbine Flows
title_full_unstemmed	Development and Experimental Validation of Real Fluid Models for CFD Calculation of ORC and Steam Turbine Flows
title_sort	development and experimental validation of real fluid models for cfd calculation of orc and steam turbine flows
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/e0686b10a02c493ab6f0ff8bce7500db
work_keys_str_mv	AT andriirusanov developmentandexperimentalvalidationofrealfluidmodelsforcfdcalculationoforcandsteamturbineflows AT romanrusanov developmentandexperimentalvalidationofrealfluidmodelsforcfdcalculationoforcandsteamturbineflows AT piotrklonowicz developmentandexperimentalvalidationofrealfluidmodelsforcfdcalculationoforcandsteamturbineflows AT piotrlampart developmentandexperimentalvalidationofrealfluidmodelsforcfdcalculationoforcandsteamturbineflows AT grzegorzzywica developmentandexperimentalvalidationofrealfluidmodelsforcfdcalculationoforcandsteamturbineflows AT aleksandraborsukiewicz developmentandexperimentalvalidationofrealfluidmodelsforcfdcalculationoforcandsteamturbineflows
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Development and Experimental Validation of Real Fluid Models for CFD Calculation of ORC and Steam Turbine Flows

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