Print Email Facebook Twitter A guide for carousel experiments on cohesive sediment Title A guide for carousel experiments on cohesive sediment Author Van der Ham, R. Faculty Civil Engineering and Geosciences Department Hydraulic Engineering Date 1996-03-01 Abstract Carousels have been developed in an attempt to approach the in situ hydrodynamic conditions and to obtain arealistic simulation of the erosion and deposition processes of cohesive sediments. The main advantage of a carousel over straight flumes is that effects of inflow and outflow are absent and no circulation pumps are needed which would break up sediment flocs. Figure 1.1 represents the flume, of the carousel type, in the Laboratory of Hydromechanics Delft University of Technology. The purpose of this guide is to contribute to carousel experiments on natural cohesive sediment in the Laboratory of Hydromechanics. The use of standardised international accepted methodologies is advocated herein, thereby following the ECMAST-I programme (1993), in order to make comparisons possible between present results and the results obtained at other institutes. Chapter 2 of this guide presents a short description of the characteristic properties of mud and their role in the erodibility of the mud. Some differences between the soil mechanical approach and the hydromechanical approach are explained. Chapter 3 briefly describes the carousel and the most important properties of flow structure in it. An operating strategy is provided, which minimizes undesirable secondary flow cells (Booij, 1994) and the minimum measuring frequency needed for calculating the Reynolds shear stress and the turbulence intensities. A Measuring Programme is presented in Chapter 4 which follows the main lines of the Delft Hydraulics measuring programme, which reflects many years of experience with carousel experiments on natural mud (Winterwerp, 1992). Chapter 5 presents a proposal for a data processing procedure, and a set up of a simple database. The database contains the data sets obtained during the carousel experiments and additional (rheological) experiments. Subject guidecarouselexperimentscohesive particlescohesive sedimentsilt To reference this document use: http://resolver.tudelft.nl/uuid:9b5103a4-2608-4275-b03d-cb9a43a53a8c Publisher TU Delft, Department of Hydraulic Engineering Source Repport no. 2-96 Part of collection Institutional Repository Document type report Rights (c) 1996 TU Delft, Department of Hydraulic Engineering Files PDF Ham_van_der1996a.pdf 11.91 MB Close viewer /islandora/object/uuid:9b5103a4-2608-4275-b03d-cb9a43a53a8c/datastream/OBJ/view