Effect of boundary conditions on particle spurious movement in Smoothed Particle Hydrodynamics method

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F23%3A00363945" target="_blank" >RIV/68407700:21220/23:00363945 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.cam.2023.115133" target="_blank" >https://doi.org/10.1016/j.cam.2023.115133</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.cam.2023.115133" target="_blank" >10.1016/j.cam.2023.115133</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effect of boundary conditions on particle spurious movement in Smoothed Particle Hydrodynamics method

Popis výsledku v původním jazyce

SPH method due to its Lagrangian particle nature suffers from non-physical particle motion resulting from its numerical properties. We study these effects associated with solid walls realization. We used stationary test case to investigate behavior of multiple formulations of boundary conditions for solid walls. Multi-layer boundaries with ghost particles are considered (Dynamic Boundary Conditions, Modified Dynamic Boundary Conditions) as well as one-layer boundary conditions based on discretization of boundary terms and usage of boundary integrals. Some aspects of each realization with respect to the stationary case and particle spurious motion are discussed. Moreover we examined the levels of spurious motion caused by different sources as the free surface, straight walls, sharp corners, ... The results show that for the boundary conditions good enough the most significant portion of spurious motion arises in place where the water surface connects to the wall and the spurious motion caused by this interaction is several orders of magnitude higher, then artificial motion caused by other sources.

Název v anglickém jazyce

Effect of boundary conditions on particle spurious movement in Smoothed Particle Hydrodynamics method

Popis výsledku anglicky

SPH method due to its Lagrangian particle nature suffers from non-physical particle motion resulting from its numerical properties. We study these effects associated with solid walls realization. We used stationary test case to investigate behavior of multiple formulations of boundary conditions for solid walls. Multi-layer boundaries with ghost particles are considered (Dynamic Boundary Conditions, Modified Dynamic Boundary Conditions) as well as one-layer boundary conditions based on discretization of boundary terms and usage of boundary integrals. Some aspects of each realization with respect to the stationary case and particle spurious motion are discussed. Moreover we examined the levels of spurious motion caused by different sources as the free surface, straight walls, sharp corners, ... The results show that for the boundary conditions good enough the most significant portion of spurious motion arises in place where the water surface connects to the wall and the spurious motion caused by this interaction is several orders of magnitude higher, then artificial motion caused by other sources.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10102 - Applied mathematics

Projekt

<a href="/cs/project/EF16_019%2F0000778" target="_blank" >EF16_019/0000778: Centrum pokročilých aplikovaných přírodních věd</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Journal of Computational and Applied Mathematics

ISSN

0377-0427

e-ISSN

1879-1778

Svazek periodika

427

Číslo periodika v rámci svazku

1.8.2023

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

11

Strana od-do

—

Kód UT WoS článku

000948660100001

EID výsledku v databázi Scopus

2-s2.0-85148683509