THE ANALYSIS OF THE BOUNDARY CONDITIONS FOR THE COMPRESSIBLE GAS FLOW AS A MODIFICATION OF THE RIEMANN PROBLEM

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00010669%3A_____%2F13%3A%230001599" target="_blank" >RIV/00010669:_____/13:#0001599 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.engmech.cz/2013/im/im/page/proceedings" target="_blank" >http://www.engmech.cz/2013/im/im/page/proceedings</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

THE ANALYSIS OF THE BOUNDARY CONDITIONS FOR THE COMPRESSIBLE GAS FLOW AS A MODIFICATION OF THE RIEMANN PROBLEM

Popis výsledku v původním jazyce

We work with the system of equations describing non-stationary compressible turbulent fluid flow (2D,3D), i.e. the Reynolds-Averaged Navier-Stokes (RANS) equations, and we focus on the numerical solution of these equations and on the boundary conditions.Some boundary conditions (i.e. fixed, linearized) bring non-physical errors into the solution, which may lead to the wrong results. We use the analysis of the Riemann problem for the construction of the boundary conditions in order to match the experimental data. Within this problem we show, that the unknown one-side initial condition can be partially replaced by the suitable complementary condition. We suggest such complementary conditions (by the preference of total quantities, pressure, temperature,velocity, condition at the diffusible barrier,...) in order to match the physically relevant data. Algorithms were coded and used within our own developed code (using the finite volume method) for the solution of the Euler, NS, and the R

Název v anglickém jazyce

THE ANALYSIS OF THE BOUNDARY CONDITIONS FOR THE COMPRESSIBLE GAS FLOW AS A MODIFICATION OF THE RIEMANN PROBLEM

Popis výsledku anglicky

We work with the system of equations describing non-stationary compressible turbulent fluid flow (2D,3D), i.e. the Reynolds-Averaged Navier-Stokes (RANS) equations, and we focus on the numerical solution of these equations and on the boundary conditions.Some boundary conditions (i.e. fixed, linearized) bring non-physical errors into the solution, which may lead to the wrong results. We use the analysis of the Riemann problem for the construction of the boundary conditions in order to match the experimental data. Within this problem we show, that the unknown one-side initial condition can be partially replaced by the suitable complementary condition. We suggest such complementary conditions (by the preference of total quantities, pressure, temperature,velocity, condition at the diffusible barrier,...) in order to match the physically relevant data. Algorithms were coded and used within our own developed code (using the finite volume method) for the solution of the Euler, NS, and the R

Druh

D - Stať ve sborníku

CEP obor

JU - Aeronautika, aerodynamika, letadla

OECD FORD obor

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Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název statě ve sborníku

Engineering Mechanics 2013

ISBN

978-80-87012-46-8

ISSN

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e-ISSN

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Počet stran výsledku

2

Strana od-do

91-92

Název nakladatele

Institute of Thermomechanics, Academy of Sciences of the Czech Republic

Místo vydání

Prague

Místo konání akce

Svratka

Datum konání akce

13. 5. 2013

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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