000001420 001__ 1420
000001420 005__ 20141118153508.0
000001420 04107 $$acze
000001420 046__ $$k2003-05-12
000001420 100__ $$aLukerchenko, N.
000001420 24500 $$a3D mathematical model of spherical particle saltatory movement in open channel with rough bed

000001420 24630 $$n9.$$pEngineering Mechanics 2003
000001420 260__ $$bInstitute of Theoretical and Applied Mechanics AS CR, Prague
000001420 506__ $$arestricted
000001420 520__ $$2eng$$aOne of the main modes of bed load transport is saltation when particles hop up from the bed and follow ballistic-like trajectories. Mathematical models of saltation are mostly two-dimensional although the particle motion is actually three- dimensional. The aim of the present study is development of the 3D mathematical model of solid particle saltatory motion over rough bed in an open channel. The motion of the particle is described by the equation of motion of particle mass centre and by equation of the particle rotation around particle centre. Gravitational force, buoyancy force, drag force, Basset history force, Magnus force and forces due to added mass and fluid acceleration are taken into account together with the mean velocity profile for turbulent flow in open channel with rough boundary. The model allows calculating 3D trajectories of the particle, statistical characteristics of saltation, such as mean length and height of the trajectory, longitudinal velocity and also the lateral dispersion of the particles.

000001420 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000001420 653__ $$a

000001420 7112_ $$aEngineering Mechanics 2003$$cSvratka (CZ)$$d2003-05-12 / 2003-05-15$$gEM2003
000001420 720__ $$aLukerchenko, N.$$iVlasák, P.$$iChára, Z.
000001420 8560_ $$ffischerc@itam.cas.cz
000001420 8564_ $$s184981$$uhttps://invenio.itam.cas.cz/record/1420/files/144-Pavel-Vlasak-PT.pdf$$y
             Original version of the author's contribution as presented on CD, FLU.
            
000001420 962__ $$r971
000001420 980__ $$aPAPER