Numerical simulation of inviscid fluid flow in time-dependent domains

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47718684%3A_____%2F15%3A%230000627" target="_blank" >RIV/47718684:_____/15:#0000627 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Numerical simulation of inviscid fluid flow in time-dependent domains

Popis výsledku v původním jazyce

The paper deals with the inviscid compressible fluid flow simulation in domains with deforming boundaries. The computational code for the numerical solution of the non-linear system of Euler equations in time-dependent domains was developed as the first step of solution of fluid-structure interaction problem. Arbitrary Lagrangian - Eulerian (ALE) description of continuum, combining Eulerian and Lagrangian approach, was used. ALE formulation of the non-linear system of Euler equations. The finite volume method, adapted for triangular computational grids, was used for the spatial discretization and the inviscid fluxes were discretized by explicit Lax-Friedrichs scheme. The computational code was validated using the well-known case of inviscid fluid flow around the airfoil NACA 0012. The boundary conditions and simulation parameters were set according to the conditions of experimental measurement and the pitching motion of the body was defined by a time-dependent function. The algorithm for the mesh deformation, suitable for the problem of flow around vibrating rigid body, is based on interpolation of coordinates by using polynomial blending function. The results of a gas flow around the vibrating profile are presented and compared with numerical results of other authors and experimental data.

Název v anglickém jazyce

Numerical simulation of inviscid fluid flow in time-dependent domains

Popis výsledku anglicky

The paper deals with the inviscid compressible fluid flow simulation in domains with deforming boundaries. The computational code for the numerical solution of the non-linear system of Euler equations in time-dependent domains was developed as the first step of solution of fluid-structure interaction problem. Arbitrary Lagrangian - Eulerian (ALE) description of continuum, combining Eulerian and Lagrangian approach, was used. ALE formulation of the non-linear system of Euler equations. The finite volume method, adapted for triangular computational grids, was used for the spatial discretization and the inviscid fluxes were discretized by explicit Lax-Friedrichs scheme. The computational code was validated using the well-known case of inviscid fluid flow around the airfoil NACA 0012. The boundary conditions and simulation parameters were set according to the conditions of experimental measurement and the pitching motion of the body was defined by a time-dependent function. The algorithm for the mesh deformation, suitable for the problem of flow around vibrating rigid body, is based on interpolation of coordinates by using polynomial blending function. The results of a gas flow around the vibrating profile are presented and compared with numerical results of other authors and experimental data.

Druh

O - Ostatní výsledky

CEP obor

BK - Mechanika tekutin

OECD FORD obor

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Projekt

<a href="/cs/project/TE01020068" target="_blank" >TE01020068: Centrum výzkumu a experimentálního vývoje spolehlivé energetiky</a><br>

Návaznosti

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

Rok uplatnění

2015

Kód důvěrnosti údajů

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