Validation of transport and friction formulae for upper plane bed by experiments in rectangular pipe

Title:

Validation of transport and friction formulae for upper plane bed by experiments in rectangular pipe

Creator:

Matoušek, Václav, Krupička, Jan, and Picek, Tomáš

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:ae54918a-24ae-400b-93f2-80b2fd5312fa
uuid:ae54918a-24ae-400b-93f2-80b2fd5312fa
doi:10.2478/johh-2013-0016

Subject:

sediment transport, sheet flow, bed load, and suspended load

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

The paper describes results of validation of authors' recently proposed formulae for sediment transport and bed friction in the upper plane bed regime using laboratory experiments in a pressurized pipe. Flows of mixture of water and fine to medium ballotini (d50 = 0.18 mm) were observed in a rectangular pipe (51 x 51 mm) with a deposit at the bottom of the pipe. A comparison of test results with transport-formula predictions shows a satisfactory match confirming a good prediction ability of the proposed transport formula at high bed shear. A prediction ability of the friction formulae appears to be less convincing but still reasonable. A joint use of the formulae for transport and friction predicts the delivered concentration of transported sediment within the accuracy range of ± 40 per cent for flows in which transported sediments strongly affect the bed friction, i.e. for flows with delivered concentration of sediment higher than say 3 per cent.

Language:

Slovak

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Coverage:

120-125

Source:

Journal of hydrology and hydromechanics | 2013 Volume:61 | Number:2

Harvested from:

CDK

Metadata only:

false