Staggered Lagrangian discretization based on cell-centered Riemann solver and associated hydrodynamics scheme

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F11%3A00171782" target="_blank" >RIV/68407700:21340/11:00171782 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.4208/cicp.170310.251110a" target="_blank" >http://dx.doi.org/10.4208/cicp.170310.251110a</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4208/cicp.170310.251110a" target="_blank" >10.4208/cicp.170310.251110a</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Staggered Lagrangian discretization based on cell-centered Riemann solver and associated hydrodynamics scheme

Popis výsledku v původním jazyce

The aim of this work is to develop a general formalism to derive staggered discretizations for Lagrangian hydrodynamics on two-dimensional unstructured grids. To this end, we make use of the compatible discretization that has been initially introduced byCaramana et al. Namely, momentum equation is discretized by means of subcell forces and specific internal energy equation is obtained using total energy conservation. The main contribution of this work lies in the fact that the subcell force is derivedinvoking Galilean invariance and thermodynamic consistency. The cell-centered velocity - a supplementary degree of freedom - is solved by means of a cell-centered approximate Riemann solver. Numerical tests are presented in order to assess the efficiencyof this approach.

Název v anglickém jazyce

Staggered Lagrangian discretization based on cell-centered Riemann solver and associated hydrodynamics scheme

Popis výsledku anglicky

The aim of this work is to develop a general formalism to derive staggered discretizations for Lagrangian hydrodynamics on two-dimensional unstructured grids. To this end, we make use of the compatible discretization that has been initially introduced byCaramana et al. Namely, momentum equation is discretized by means of subcell forces and specific internal energy equation is obtained using total energy conservation. The main contribution of this work lies in the fact that the subcell force is derivedinvoking Galilean invariance and thermodynamic consistency. The cell-centered velocity - a supplementary degree of freedom - is solved by means of a cell-centered approximate Riemann solver. Numerical tests are presented in order to assess the efficiencyof this approach.

Druh

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

CEP obor

BA - Obecná matematika

OECD FORD obor

—

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2011

Kód důvěrnosti údajů

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

Název periodika

Communications in Computational Physics

ISSN

1815-2406

e-ISSN

—

Svazek periodika

10

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

CN - Čínská lidová republika

Počet stran výsledku

39

Strana od-do

940-978

Kód UT WoS článku

000298764000010

EID výsledku v databázi Scopus

—