Open AccessVARIATION OF SEDIMENT SUSPENSION IN OSCILLATORY FLOW
Author(s) -
Carsten Staub,
Ivar G. Jonsson,
Ib A. Svendsen
Publication year - 1984
Publication title -
proceedings of conference on coastal engineering/proceedings of ... conference on coastal engineering
Language(s) - English
Resource type - Journals
eISSN - 2156-1028
pISSN - 0589-087X
DOI - 10.9753/icce.v19.155
Subject(s) - sediment , suspension (topology) , turbulence , suction , flow (mathematics) , geotechnical engineering , geology , variation (astronomy) , hydrology (agriculture) , mechanics , soil science , environmental science , geomorphology , meteorology , physics , mathematics , homotopy , pure mathematics , astrophysics
Different syphon type suspended load probes were used together with a newly developed 'carousel' sampler for measurements of the instantaneous sediment concentration in turbulent oscillatory flow over a sand bed. Shields parameters were well above the rippled/flat bed transition region, resulting in intense sediment transport over a flat bed. The measurements were performed at different levels in a large oscillating water tunnel. They showed some characteristic features of the temporal concentration variation and of the variation with height of the mean concentration. Also a pronounced effect of the orientation of the suction tube relative to the flow was observed.