Numerical simulation of a flow inside an exhaust diffuser

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00010669%3A_____%2F12%3A%230001467" target="_blank" >RIV/00010669:_____/12:#0001467 - isvavai.cz</a>

Výsledek na webu

<a href="http://eccomas2012.conf.tuwien.ac.at/" target="_blank" >http://eccomas2012.conf.tuwien.ac.at/</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Numerical simulation of a flow inside an exhaust diffuser

Popis výsledku v původním jazyce

This paper presents numerical results of a flow inside an axial-radial exhaust diffuser. According to experiences, this type of diffuser can suffer from a separation of the flow on the outer curved wall. This fact reduces the effective flow rate which leads to an increase of losses. It was shown, that an additional blowing into the stream causes under certain conditions, that the flow remains attached to the wall and thus significantly reduces losses. The diffuser is represented by an axisymmetrical channel which bends ninety degrees from the axis. The flow inside the channel is described by RANS equations with a k-omega turbulence model. Besides a full three dimensional model, a simplified model utilizing the axisymmetry was used. The boundary condition on the inlet is given by a prescribed total pressure and total temperature. On the outlet boundary, a static pressure is prescribed. The jet-like inflow is given by a mass flow rate. Different parameters of the blowing were studied and

Název v anglickém jazyce

Numerical simulation of a flow inside an exhaust diffuser

Popis výsledku anglicky

This paper presents numerical results of a flow inside an axial-radial exhaust diffuser. According to experiences, this type of diffuser can suffer from a separation of the flow on the outer curved wall. This fact reduces the effective flow rate which leads to an increase of losses. It was shown, that an additional blowing into the stream causes under certain conditions, that the flow remains attached to the wall and thus significantly reduces losses. The diffuser is represented by an axisymmetrical channel which bends ninety degrees from the axis. The flow inside the channel is described by RANS equations with a k-omega turbulence model. Besides a full three dimensional model, a simplified model utilizing the axisymmetry was used. The boundary condition on the inlet is given by a prescribed total pressure and total temperature. On the outlet boundary, a static pressure is prescribed. The jet-like inflow is given by a mass flow rate. Different parameters of the blowing were studied and

Druh

D - Stať ve sborníku

CEP obor

BK - Mechanika tekutin

OECD FORD obor

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Projekt

<a href="/cs/project/FR-TI3%2F432" target="_blank" >FR-TI3/432: *Komplexní vývoj turbínového přetlakového stupně s vysokou účinností</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2012

Kód důvěrnosti údajů

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

Název statě ve sborníku

ECCOMAS 2012 Proceedings

ISBN

978-3-9502481-9-7

ISSN

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e-ISSN

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Počet stran výsledku

9

Strana od-do

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Název nakladatele

Technická univerzita ve Vídni

Místo vydání

Vídeň

Místo konání akce

Vídeň

Datum konání akce

10. 9. 2012

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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