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

[img]
Preview
PDF
Language: English
1553Kb
Title:Validation of transport and friction formulae for upper plane bed by experiments in rectangular pipe
Creators:
Matoušek, Václav; v dot matousek at fsv dot cvut dot cz; Czech Technical University in Prague, Faculty of Civil Engineering, Thákurova 7, 166 29 Prague 6, Czech Republic.
Krupička, Jan; Czech Technical University in Prague, Faculty of Civil Engineering, Thákurova 7, 166 29 Prague 6, Czech Republic.
Picek, Tomáš; Czech Technical University in Prague, Faculty of Civil Engineering, Thákurova 7, 166 29 Prague 6, Czech Republic.
Journal or Publication Title:
Journal of Hydrology and Hydromechanics, 61, 2, pp. 120-125
Uncontrolled Keywords:Sediment transport, Sheet flow, Bed load, Suspended load

Abstract

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.

Official URL: http://147.213.145.2/vc/vc1.asp

Title:Validation of transport and friction formulae for upper plane bed by experiments in rectangular pipe
Translated title:Validation of transport and friction formulae for upper plane bed by experiments in rectangular pipe
Creators:
Matoušek, Václav; v dot matousek at fsv dot cvut dot cz; Czech Technical University in Prague, Faculty of Civil Engineering, Thákurova 7, 166 29 Prague 6, Czech Republic.
Krupička, Jan; Czech Technical University in Prague, Faculty of Civil Engineering, Thákurova 7, 166 29 Prague 6, Czech Republic.
Picek, Tomáš; Czech Technical University in Prague, Faculty of Civil Engineering, Thákurova 7, 166 29 Prague 6, Czech Republic.
Uncontrolled Keywords:Sediment transport, Sheet flow, Bed load, Suspended load
Subjects:T Technology > TA Engineering (General). Civil engineering (General)
Divisions:Mathematics, Physics and Earth Sciences > Institute of Hydrodynamics > Journal of Hydrology and Hydromechanics
Journal or Publication Title:Journal of Hydrology and Hydromechanics
Volume:61
Number:2
Page Range:pp. 120-125
ISSN:0042-790X
Publisher:Institute of Hydrology of the Slovak Academy of Sciences and the Institute of Hydrodynamics of the Academy of Sciences of the Czech Republic
Related URLs:
URLURL Type
http://avi.lib.cas.cz/node/55Publisher
ID Code:7761
Item Type:Article
Deposited On:15 Jul 2013 19:29
Last Modified:15 Jul 2013 17:29

Citation

Matoušek, Václav; Krupička, Jan; Picek, Tomáš (2013) Validation of transport and friction formulae for upper plane bed by experiments in rectangular pipe. Journal of Hydrology and Hydromechanics, 61 (2). pp. 120-125. ISSN 0042-790X

Repository Staff Only: item control page