Basset history force for spherical particle colliding with wall

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985874%3A_____%2F09%3A00329721" target="_blank" >RIV/67985874:_____/09:00329721 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Basset history force for spherical particle colliding with wall

Popis výsledku v původním jazyce

In the most works the calculation of the Basset force is reset to zero after each rebound from the wall. However, the integral of Basset force is sometimes calculated from the moment t-Tback to the current moment t. A few particle jumps can occur during?the memory time period Tback , the history of the particle motion during this period must be taken into account totally, including the particle?wall collisions. In the paper the contributions of the particle?wall collisions in the Basset force are expressed by formula. It is shown that in the moment of the collision tc the value of the Basset force becomes infinitely large. In the moment near the collision t = tc+ ? t (? t < tc) the value of the Basset force is great but the impulse of the Basset forcehas the order of , i.e. small. Thus, a particle-wall collision brings to a peak the increase of the Basset force during the short time so that its impulse remains finite. It must be taken into account into numerical models.

Název v anglickém jazyce

Basset history force for spherical particle colliding with wall

Popis výsledku anglicky

In the most works the calculation of the Basset force is reset to zero after each rebound from the wall. However, the integral of Basset force is sometimes calculated from the moment t-Tback to the current moment t. A few particle jumps can occur during?the memory time period Tback , the history of the particle motion during this period must be taken into account totally, including the particle?wall collisions. In the paper the contributions of the particle?wall collisions in the Basset force are expressed by formula. It is shown that in the moment of the collision tc the value of the Basset force becomes infinitely large. In the moment near the collision t = tc+ ? t (? t < tc) the value of the Basset force is great but the impulse of the Basset forcehas the order of , i.e. small. Thus, a particle-wall collision brings to a peak the increase of the Basset force during the short time so that its impulse remains finite. It must be taken into account into numerical models.

Druh

D - Stať ve sborníku

CEP obor

BK - Mechanika tekutin

OECD FORD obor

—

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

2009

Kód důvěrnosti údajů

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

Název statě ve sborníku

MMTT-22: Matematicheskije Metody v Nauke i Technologijach

ISBN

978-5-91116-096-5

ISSN

—

e-ISSN

—

Počet stran výsledku

3

Strana od-do

—

Název nakladatele

PGPI

Místo vydání

Pskov

Místo konání akce

Pskov

Datum konání akce

25. 5. 2009

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

—