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National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
2D numerický model dna kanálu utvářeného náhodně rozdělenými kulovitými částicemi
 Kharlamov, Alexander
The paper deals with the saltation mode of bed load transport. The saltation process modelling consists of two parts – deterministic motion of the particle in fluid and stochastic process of its collision with bed, which is the stochastic part of a Monte-Carlo simulation. The channel bed is formed by spherical particles of non-uniform size, the distribution of the particles radiuses and the particle height is of Gaussian type. The numerical method of a bed forming and determination of collision coordinates and a collision angle is proposed.
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Výpočet funkcí parametrů saltačního procesu
 Piatsevich, Siarhei ; Lukerchenko, Nikolay ; Chára, Zdeněk ; Vlasák, Pavel
The results of the 3D simulation of the solid spherical particles saltation in an open channel with rough bed are presented. The dependences of mean saltation length, mean saltation height, mean saltation velocity and mean deviation of angle of particle trajectories with respect to the downstream direction were studied and determined as the functions of the saltation process parameters, such as the flow shear velocity and the particle diameter.
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