Název: Modelling of bed in process of particle saltation in channel
Autoři: Kharlamova, Irina ; Kharlamov, Alexander A. ; Chára, Zdeněk ; Vlasák, Pavel
Typ dokumentu: Příspěvky z konference
Konference/Akce: Engineering Mechanics 2011 /17./, Svratka (CZ), 2011-05-09 / 2011-05-12
Rok: 2011
Jazyk: eng
Abstrakt: For numerical modelling particle saltation in channel with rough bed is important to define a bed configuration. The paper deals with the bed consisting of spherical particles of the different size then the saltating particle. In horizontal x-z plane the particles are arranged hexagonally. In vertical direction the particles are distributed according to Gaussian distribution. Before each collision of the saltating particle with bed the bed is shifted on a random distance and it is rotated by a random angle, so there is uniform probability to find a bed particle in any point of the x-z plane. The bed structure is chosen with aim to represent the natural bed as much as possible, thus the known information about distribution of the bed particles along y-direction is used and the location of bed particles in the x-z plane is controlled by principles of equal probability and minimal dense packing.
Klíčová slova: bed structure; hexagonal packing; normal distribution
Číslo projektu: CEZ:AV0Z20600510 (CEP), GA103/09/1718 (CEP)
Poskytovatel projektu: GA ČR
Zdrojový dokument: Engineering Mechanics 2011, ISBN 978-80-87012-33-8

Instituce: Ústav pro hydrodynamiku AV ČR (web)
Informace o dostupnosti dokumentu: Dokument je dostupný v repozitáři Akademie věd.
Původní záznam: http://hdl.handle.net/11104/0197268

Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-42805


Záznam je zařazen do těchto sbírek:
Věda a výzkum > AV ČR > Ústav pro hydrodynamiku
Konferenční materiály > Příspěvky z konference