Simulation of unsteady flows through three-stage middle pressure steam turbine in operation

The purpose of this study is to simulate unsteady steam flows through three-stage stator and rotor blade passages in a middle-pressure steam turbine operated in a power plant while considering manufactured and secular-changed blade shapes. The shapes of the manufactured and secular-changed blades ar...

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Autores principales:	Akihiro UEMURA, Hironori MIYAZAWA, Takashi FURUSAWA, Satoru YAMAMOTO, Koichi YONEZAWA, Shuichi UMEZAWA, Shuichi OHMORI
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2020
Materias:	numerical simulation steam turbine middle pressure three stages secular change heat balance Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/770a9fdda7764a8da3834281e52f7dc8
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id	oai:doaj.org-article:770a9fdda7764a8da3834281e52f7dc8
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spelling	oai:doaj.org-article:770a9fdda7764a8da3834281e52f7dc82021-11-29T05:59:26ZSimulation of unsteady flows through three-stage middle pressure steam turbine in operation2187-974510.1299/mej.20-00068https://doaj.org/article/770a9fdda7764a8da3834281e52f7dc82020-07-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/7/4/7_20-00068/_pdf/-char/enhttps://doaj.org/toc/2187-9745The purpose of this study is to simulate unsteady steam flows through three-stage stator and rotor blade passages in a middle-pressure steam turbine operated in a power plant while considering manufactured and secular-changed blade shapes. The shapes of the manufactured and secular-changed blades are measured during overhaul. The numerical method is based on an in-house code developed by Tohoku University. The time-dependent pressure and the Mach number are visualized, and the difference of the results obtained by assuming manufactured and secular-changed blades is explained. The simulated static temperatures assuming the blades shapes are then compared with each other and with the measured data. In addition, a simple method modifying the simulated static temperature considering real gas effect is introduced.Akihiro UEMURAHironori MIYAZAWATakashi FURUSAWASatoru YAMAMOTOKoichi YONEZAWAShuichi UMEZAWAShuichi OHMORIThe Japan Society of Mechanical Engineersarticlenumerical simulationsteam turbinemiddle pressurethree stagessecular changeheat balanceMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 7, Iss 4, Pp 20-00068-20-00068 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	numerical simulation steam turbine middle pressure three stages secular change heat balance Mechanical engineering and machinery TJ1-1570
spellingShingle	numerical simulation steam turbine middle pressure three stages secular change heat balance Mechanical engineering and machinery TJ1-1570 Akihiro UEMURA Hironori MIYAZAWA Takashi FURUSAWA Satoru YAMAMOTO Koichi YONEZAWA Shuichi UMEZAWA Shuichi OHMORI Simulation of unsteady flows through three-stage middle pressure steam turbine in operation
description	The purpose of this study is to simulate unsteady steam flows through three-stage stator and rotor blade passages in a middle-pressure steam turbine operated in a power plant while considering manufactured and secular-changed blade shapes. The shapes of the manufactured and secular-changed blades are measured during overhaul. The numerical method is based on an in-house code developed by Tohoku University. The time-dependent pressure and the Mach number are visualized, and the difference of the results obtained by assuming manufactured and secular-changed blades is explained. The simulated static temperatures assuming the blades shapes are then compared with each other and with the measured data. In addition, a simple method modifying the simulated static temperature considering real gas effect is introduced.
format	article
author	Akihiro UEMURA Hironori MIYAZAWA Takashi FURUSAWA Satoru YAMAMOTO Koichi YONEZAWA Shuichi UMEZAWA Shuichi OHMORI
author_facet	Akihiro UEMURA Hironori MIYAZAWA Takashi FURUSAWA Satoru YAMAMOTO Koichi YONEZAWA Shuichi UMEZAWA Shuichi OHMORI
author_sort	Akihiro UEMURA
title	Simulation of unsteady flows through three-stage middle pressure steam turbine in operation
title_short	Simulation of unsteady flows through three-stage middle pressure steam turbine in operation
title_full	Simulation of unsteady flows through three-stage middle pressure steam turbine in operation
title_fullStr	Simulation of unsteady flows through three-stage middle pressure steam turbine in operation
title_full_unstemmed	Simulation of unsteady flows through three-stage middle pressure steam turbine in operation
title_sort	simulation of unsteady flows through three-stage middle pressure steam turbine in operation
publisher	The Japan Society of Mechanical Engineers
publishDate	2020
url	https://doaj.org/article/770a9fdda7764a8da3834281e52f7dc8
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Simulation of unsteady flows through three-stage middle pressure steam turbine in operation

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