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Basset force in numerical models of saltation

SYSNO ASEP	0385096
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Basset force in numerical models of saltation
Author(s)	Lukerchenko, Nikolay (UH-J) Dolanský, Jindřich (UH-J)_{SAI, ORCID, RID} Vlasák, Pavel (UH-J)_{SAI, ORCID, RID}
Source Title	Journal of Hydrology and Hydromechanics. - : Ústav pro hydromechaniku AV ČR, v. v. i.. - : Ústav hydrológie SAV - ISSN 0042-790X Roč. 60, č. 4 (2012), s. 277-287
Number of pages	11 s.
Language	eng - English
Country	SK - Slovakia
Keywords	basset force ; bed load transport ; numerical model ; particle-bed collision
Subject RIV	BK - Fluid Dynamics
R&D Projects	GA103/09/1718 GA ČR - Czech Science Foundation (CSF)
CEZ	AV0Z20600510 - UH-J (2005-2011)
UT WOS	000312915300006
DOI	10.2478/v10098-012-0024-1
Annotation	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 into account 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 transport stage. The conditions under which the Basset force can be neglected in numerical models of saltation are studied.
Workplace	Institute of Hydrodynamics
Contact	Soňa Hnilicová, hnilicova@ih.cas.cz, Tel.: 233 109 003
Year of Publishing	2013

Number of the records: 1