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

In: Journal of Hydrology and Hydromechanics, vol. 61, no. 2
Vaclav Matousek - Jan Krupicka - Tomas Picek
Detaily:
Rok, strany: 2013, 120 - 125
Kľúčové slová:
Sediment transport; Sheet flow; Bed load; Suspended load.
URL originálneho zdroja: http://www.ih.savba.sk/jhh
O článku:
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.
Ako citovať:
ISO 690:
Matousek, V., Krupicka, J., Picek, T. 2013. Validation of transport and friction formulae for upper plane bed by experiments in rectangular pipe. In Journal of Hydrology and Hydromechanics, vol. 61, no.2, pp. 120-125. 0042-790X (until 2019) .

APA:
Matousek, V., Krupicka, J., Picek, T. (2013). Validation of transport and friction formulae for upper plane bed by experiments in rectangular pipe. Journal of Hydrology and Hydromechanics, 61(2), 120-125. 0042-790X (until 2019) .