Enhancement of Lagrangian slide lines as a combined force and velocity boundary condition

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F13%3A00199679" target="_blank" >RIV/68407700:21340/13:00199679 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.sciencedirect.com/science/article/pii/S0045793012002289" target="_blank" >http://www.sciencedirect.com/science/article/pii/S0045793012002289</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.compfluid.2012.06.005" target="_blank" >10.1016/j.compfluid.2012.06.005</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Enhancement of Lagrangian slide lines as a combined force and velocity boundary condition

Popis výsledku v původním jazyce

Many hydrodynamical problems involve shear flows along material interfaces. If the materials move along each other but are tied to a single Lagrangian computational mesh without any sliding treatment, severe mesh distortions appear which can eventually cause the failure of the simulation. This problem is usually treated by introducing the sliding line framework into the Lagrangian code. In this paper, we revise the 2D approach described in the article E.J. Caramana, The implementation of slide lines asa combined force and velocity boundary condition, Journal of Computational Physics 228 (2009), and suggest two enhancements ? interpolated interaction instead of a simple one-to-one interaction described in the previous article, and a numerical surface tension model improving the stability of the interface. Both improvements stabilize the slide line and lead to more realistic results, as shown on selected numerical examples.

Název v anglickém jazyce

Enhancement of Lagrangian slide lines as a combined force and velocity boundary condition

Popis výsledku anglicky

Many hydrodynamical problems involve shear flows along material interfaces. If the materials move along each other but are tied to a single Lagrangian computational mesh without any sliding treatment, severe mesh distortions appear which can eventually cause the failure of the simulation. This problem is usually treated by introducing the sliding line framework into the Lagrangian code. In this paper, we revise the 2D approach described in the article E.J. Caramana, The implementation of slide lines asa combined force and velocity boundary condition, Journal of Computational Physics 228 (2009), and suggest two enhancements ? interpolated interaction instead of a simple one-to-one interaction described in the previous article, and a numerical surface tension model improving the stability of the interface. Both improvements stabilize the slide line and lead to more realistic results, as shown on selected numerical examples.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BK - Mechanika tekutin

OECD FORD obor

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Projekt

<a href="/cs/project/GPP201%2F10%2FP086" target="_blank" >GPP201/10/P086: Multimaterialové Lagrangeovsko-Eulerovské (ALE) metody pro hydrodynamické simulace plazmatu</a><br>

Návaznosti

S - Specificky vyzkum na vysokych skolach<br>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 periodika

Computers & Fluids

ISSN

0045-7930

e-ISSN

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Svazek periodika

83

Číslo periodika v rámci svazku

August

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

12

Strana od-do

3-14

Kód UT WoS článku

000323093100002

EID výsledku v databázi Scopus

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