Original title: Dependence of saltation parameters on bed roughness and bed porosity
Authors: Kharlamova, Irina ; Vlasák, Pavel
Document type: Papers
Conference/Event: Engineering Mechanics 2012 /18./, Svratka (CZ), 2012-05-14 / 2012-05-17
Year: 2012
Language: eng
Abstract: In numerical models of bed load transport a bed structure of channel could be described by two parameters, a size of bed particles and a standard deviation of normal distribution of bed particles in the vertical direction. The present paper deals with the effect of bed parameters on average length and height of one jump of saltating particle. A new formula was proposed for bed roughness based on size and standard deviation of the normal distribution of the bed particles. The dependences of length and height of the jump on the diameter of the saltating and bed particles were determined for different variation of vertical distribution of the bed particles.
Keywords: bed roughness; bed structure; normal distribution of bed particles; saltation height; saltation length; saltation parameters
Project no.: CEZ:AV0Z20600510 (CEP), GA103/09/1718 (CEP)
Funding provider: GA ČR
Host item entry: Engineering Mechanics 2012, ISBN 978-80-86246-40-6

Institution: Institute of Hydrodynamics AS ČR (web)
Document availability information: Fulltext is available on demand via the digital repository of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0209381

Permalink: http://www.nusl.cz/ntk/nusl-112949


The record appears in these collections:
Research > Institutes ASCR > Institute of Hydrodynamics
Conference materials > Papers