Basset force in numerical models of saltation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985874%3A_____%2F12%3A00385096" target="_blank" >RIV/67985874:_____/12:00385096 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.2478/v10098-012-0024-1" target="_blank" >http://dx.doi.org/10.2478/v10098-012-0024-1</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.2478/v10098-012-0024-1" target="_blank" >10.2478/v10098-012-0024-1</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Basset force in numerical models of saltation

Popis výsledku v původním jazyce

In numerical models of fluid flow with particles moving close to solid boundaries, the Basset force is usually calculated for the particle motion between particle-boundary collisions. The present study shows that the history force must also be taken intoaccount regarding particle collisions with boundaries or with other particles. For saltation ? the main mode of bed load transport ? it is shown using calculations that two parts of the history force due to both particle motion in the fluid and to particle-bed collisions are comparable and substantially compensate one another. The calculations and comparison of the Basset force with other forces acting on a sand particle saltating in water flow are carried out for the different values of the transportstage. The conditions under which the Basset force can be neglected in numerical models of saltation are studied.

Název v anglickém jazyce

Basset force in numerical models of saltation

Popis výsledku anglicky

In numerical models of fluid flow with particles moving close to solid boundaries, the Basset force is usually calculated for the particle motion between particle-boundary collisions. The present study shows that the history force must also be taken intoaccount regarding particle collisions with boundaries or with other particles. For saltation ? the main mode of bed load transport ? it is shown using calculations that two parts of the history force due to both particle motion in the fluid and to particle-bed collisions are comparable and substantially compensate one another. The calculations and comparison of the Basset force with other forces acting on a sand particle saltating in water flow are carried out for the different values of the transportstage. The conditions under which the Basset force can be neglected in numerical models of saltation are studied.

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/GA103%2F09%2F1718" target="_blank" >GA103/09/1718: Numerický model pohybu kulovité částice a mraku částic u dna kanálu při proměnných podmínkách proudění v kanále</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2012

Kód důvěrnosti údajů

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

Název periodika

Journal of Hydrology and Hydromechanics

ISSN

0042-790X

e-ISSN

—

Svazek periodika

60

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

SK - Slovenská republika

Počet stran výsledku

11

Strana od-do

277-287

Kód UT WoS článku

000312915300006

EID výsledku v databázi Scopus

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