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Modelling of bed in process of particle saltation in channel
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SYSNO ASEP 0359487 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Modelling of bed in process of particle saltation in channel Author(s) Kharlamova, Irina (UH-J) RID
Kharlamov, Alexander A. (UH-J)
Chára, Zdeněk (UH-J) SAI, ORCID, RID
Vlasák, Pavel (UH-J) SAI, ORCID, RIDSource Title Engineering Mechanics 2011. - Prague : Institute of Thermomechanics AS CR, v. v. i., 2011 / Fuis V. - ISBN 978-80-87012-33-8 Pages s. 279-282 Number of pages 4 s. Action Engineering Mechanics 2011 /17./ Event date 09.05.2011-12.05.2011 VEvent location Svratka Country CZ - Czech Republic Event type EUR Language eng - English Country CZ - Czech Republic Keywords bed structure ; normal distribution ; hexagonal packing 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 000313492700063 Annotation 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. Workplace Institute of Hydrodynamics Contact Soňa Hnilicová, hnilicova@ih.cas.cz, Tel.: 233 109 003 Year of Publishing 2012
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