Numerical solution of inviscid transonic 2D flow in a nozle using various non-ideal equations of state

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Numerical solution of inviscid transonic 2D flow in a nozle using various non-ideal equations of state

Popis výsledku v původním jazyce

The system of Euler equations, which describes an inviscid fluid flow, must be closed with some thermodynamic relations known as an equation of state. The simplest example of it is the perfect gas model, which is frequently used in numerical codes. However, in some regions where the compressibility factor differs significantly from one, more sophisticated models should be applied to avoid errors. The results achieved using the perfect gas, van der Waals, Redlich-Kwong-Augier and one-coefficient virial equation of state for steam are compared with the chosen simpler reference solution based on the equation of state provided by IAPWS-95. All these models were implemented into in-house code based on the finite volume method in 2D along with AUSM+ flux andwere tested for steady transonic flow at off-design conditions for convergent-divergent Barschdorff nozzle (shock wave in the divergent part).

Název v anglickém jazyce

Numerical solution of inviscid transonic 2D flow in a nozle using various non-ideal equations of state

Popis výsledku anglicky

The system of Euler equations, which describes an inviscid fluid flow, must be closed with some thermodynamic relations known as an equation of state. The simplest example of it is the perfect gas model, which is frequently used in numerical codes. However, in some regions where the compressibility factor differs significantly from one, more sophisticated models should be applied to avoid errors. The results achieved using the perfect gas, van der Waals, Redlich-Kwong-Augier and one-coefficient virial equation of state for steam are compared with the chosen simpler reference solution based on the equation of state provided by IAPWS-95. All these models were implemented into in-house code based on the finite volume method in 2D along with AUSM+ flux andwere tested for steady transonic flow at off-design conditions for convergent-divergent Barschdorff nozzle (shock wave in the divergent part).

Druh

D - Stať ve sborníku

CEP obor

BA - Obecná matematika

OECD FORD obor

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Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název statě ve sborníku

Conference TOPICAL PROBLEMS OF FLUID MECHANICS 2014

ISBN

978-80-87012-51-2

ISSN

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e-ISSN

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Počet stran výsledku

4

Strana od-do

45-48

Název nakladatele

Institute of Thermomechanics, AS CR, v.v.i.

Místo vydání

Prague

Místo konání akce

Praha

Datum konání akce

19. 2. 2014

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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