Basset history force for spherical particle colliding with wall

Result code in 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>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Basset history force for spherical particle colliding with wall
Original language description
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.
Czech name
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Czech description
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Project
<a href="/en/project/GA103%2F09%2F1718" target="_blank" >GA103/09/1718: Numerical model of the bed load transport of particle and cluster of particles under variable flow conditions in a channel</a><br>
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2009
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
MMTT-22: Matematicheskije Metody v Nauke i Technologijach
ISBN
978-5-91116-096-5
ISSN
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e-ISSN
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Number of pages
3
Pages from-to
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Publisher name
PGPI
Place of publication
Pskov
Event location
Pskov
Event date
May 25, 2009
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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