Hydrodynamic investigation of fluvial sediment transport with Soil Protrusion Apparatus (SPA)

Article

Jayaratne, R. and Salim, Sarik 2014. Hydrodynamic investigation of fluvial sediment transport with Soil Protrusion Apparatus (SPA). Open Engineering. 5 (1), pp. 48-58. https://doi.org/10.1515/eng-2015-0001
AuthorsJayaratne, R. and Salim, Sarik
Abstract

In order to understand sediment transport process based on knowledge of their soil properties and hydrodynamic behaviour a series of 2D laboratory controlled small-scale experiments were conducted using the Ahlborn sediment mobile bed tank (4.0×0.6×0.2 m). Experiments were conducted in smooth and rough bed conditions with purposely-built Soil Protrusion Apparatus (SPA) to measure the basic parameters on which erosion depends. Sediment deposition patterns in equilibrium stage associated with different bed roughness and particle size distributions were fundamentally investigated. Extended physical modelling of crescent zones also included
analysing their grain size distribution. Dimensional analysis and multiple linear regression methods were employed to derive a simple empirical relationship for erosion rate (ER) in terms of the shear stress (τs), average grain diameter (d50) and soil protrusion (z) for smooth and rough sediment
bed conditions. These analyses also suggest ways to refine empirical models, examining transport rates to explore the limits of erosion and deposition influences in shallow flow conditions.

JournalOpen Engineering
Journal citation5 (1), pp. 48-58
ISSN2391-5439
Year2014
PublisherDe Gruyter
Publisher's version
License
CC BY-NC-ND
Digital Object Identifier (DOI)https://doi.org/10.1515/eng-2015-0001
Publication dates
Print20 Nov 2014
Publication process dates
Deposited22 Dec 2014
Accepted26 Aug 2014
FunderUniversity of East London
University of East London
Copyright information© 2015 Ravindra Jayaratne, Sarik Salim, licensee De Gruyter Open. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License.
LicenseCC BY-NC-ND 3.0
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