Flow roughness evaluation of mobile-bed streams

• Autorzy: Matousek V.
• Języki publikacji: EN

Abstrakty

EN

Recent field measurements of mobile-bed roughness in selected streams in Czech Republic are described. The results are collected in a database organized to a www catalogue. The field results of the bed roughness in two gravel-bed streams under flash flood conditions are discussed. A methodology is suggested for evaluation of the bed roughness of straight channels transporting sediments. A prediction of the bed roughness under the condition of intense sediment transport in the upper plane bed regime is demonstrated on the results of laboratory pressurized-pipe tests. An application to flood conditions in a steep mountain creek is shown in a case study.

Słowa kluczowe

EN

Czech Republic; bed load; sediment transport; flood flow; slurry pipe; upper plane bed; stream; field measurement; bed roughness; flood condition; hydraulic roughness

• Wydawca: -
• Czasopismo: Infrastruktura i Ekologia Terenów Wiejskich
• Rocznik: 2010
• Numer: 11
• Opis fizyczny: p.115-126,fig.,ref.

Twórcy

autor

Matousek V.

• Faculty of Civil Engineering, Department of Hydraulics and Hydrology, Czech Technical University in Prague, Thakurova 7, 166 29 Prague 6, Czech Republic

Bibliografia

• Matoušek, V. 2009a. Roughness of mobile bed at high shear stress: applications for enclosed pipes and open channels. Proceedings of 12th International Scientific Conference, Brno, CzechRepublic.
• Matoušek, V. 2009b. Concentration profiles and solids transport above stationary deposit in enclosed conduit. Journal of Hydraulic Engineering, ASCE, 135(12), 1101-1106.
• Matoušek, V., Krupička, J. 2009. On equivalent roughness of mobile bed at high shear stress. Journal of Hydrology and Hydromechanics, 57(3), 191-199.
• Matoušek, V., Krupička, J. 2010. Bed roughness at high bed shear in open channels and pressurized pipes. Proceedings of River Flow 2010, Braunschweig, Germany.