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Impact of the regularity of the sediment bed on bed‐load transport
Author(s) -
Jain Ramandeep,
Vowinckel Bernhard,
Fröhlich Jochen
Publication year - 2016
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201610280
Subject(s) - bed load , surface finish , sediment transport , sediment , particle (ecology) , geotechnical engineering , cluster analysis , geology , displacement (psychology) , mechanics , particle size , materials science , geometry , mathematics , physics , geomorphology , composite material , statistics , psychology , paleontology , oceanography , psychotherapist
The present study analyzes the impact of regularly arranged sediment bed on the particle clustering by introducing an artificial non‐uniformity in the particle packing. Two simulations only differing in their sediment bed configuration are reported with the non‐uniform roughness created through a random vertical displacement of the fixed particles constituting the rough wall. It is found that the irregular roughness enhances particle clustering as well as bed‐load transport compared to the case of uniform roughness. As a result the statistics of disperse and continuous phase are markedly different. (© 2016 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)