Aerodynamic Data for Two Variants of Root Turbine Blade Sections for A 54" Turbine Rotor Blade

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F14%3A00429082" target="_blank" >RIV/61388998:_____/14:00429082 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1115/GT2014-25323" target="_blank" >http://dx.doi.org/10.1115/GT2014-25323</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1115/GT2014-25323" target="_blank" >10.1115/GT2014-25323</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Aerodynamic Data for Two Variants of Root Turbine Blade Sections for A 54" Turbine Rotor Blade

Popis výsledku v původním jazyce

Aerodynamic investigations were performed on planar blade cascades representing two alternative root sections of rotor blades 54" in length with straight fir-tree root. Each of the variants was designed for different number of blades in the rotor. This paper presents the results of measurements showing the dependency of the kinetic energy loss coefficient and the exit flow angle on the exit isoentropic Mach number and the angle of incidence. Images of the flow fields are also presented. The experimentaldata is analyzed to assess and document the difference between the two root section designs. Results show that requirement of straight fir tree root leading to high design incidence angles significantly limit operation range. Also in case of root sections with high exit Mach numbers a limit load conditions are an issue. In order to utilize available pressure drop blade cascade throat/pitch ratios should be kept as high as possible which favorites variant with lower number of blades and

Název v anglickém jazyce

Aerodynamic Data for Two Variants of Root Turbine Blade Sections for A 54" Turbine Rotor Blade

Popis výsledku anglicky

Aerodynamic investigations were performed on planar blade cascades representing two alternative root sections of rotor blades 54" in length with straight fir-tree root. Each of the variants was designed for different number of blades in the rotor. This paper presents the results of measurements showing the dependency of the kinetic energy loss coefficient and the exit flow angle on the exit isoentropic Mach number and the angle of incidence. Images of the flow fields are also presented. The experimentaldata is analyzed to assess and document the difference between the two root section designs. Results show that requirement of straight fir tree root leading to high design incidence angles significantly limit operation range. Also in case of root sections with high exit Mach numbers a limit load conditions are an issue. In order to utilize available pressure drop blade cascade throat/pitch ratios should be kept as high as possible which favorites variant with lower number of blades and

Druh

D - Stať ve sborníku

CEP obor

BK - Mechanika tekutin

OECD FORD obor

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Projekt

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

Návaznosti

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 statě ve sborníku

Proceedings of the ASME Turbo Expo 2014

ISBN

978-0-7918-4562-2

ISSN

—

e-ISSN

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Počet stran výsledku

13

Strana od-do

"V02CT38A007"-"V02CT38A019"

Název nakladatele

ASME

Místo vydání

Düsseldorf

Místo konání akce

Düsseldorf

Datum konání akce

16. 6. 2014

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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