Experimental Investigation of Kinetic Energy and Momentum Coefficients in Regular Channels with Stiff and Flexible Elements Simulating Submerged Vegetation

• Autorzy: Kubrak E. , Kubrak J. , Kiczko A.

Identyfikatory

DOI

10.1515/acgeo-2015-0053

• Języki publikacji: EN

Abstrakty

EN

The paper addresses the problem of determination of the energy and momentum coefficients for flows through a partly vegetated channel. These coefficients are applied to express the fluid kinetic energy and momentum equations as functions of a mean velocity. The study is based on laboratory measurements of water velocity distributions in a straight rectangular flume with stiff and flexible stems and plastic imitations of the Canadian waterweed. The coefficients were established for the vegetation layer, surface layer and the whole flow area. The results indicate that the energy and momentum coefficients increase significantly with water depth and the number of stems per unit channel area. New regression relationships for both coefficients are given.

Słowa kluczowe

EN

submerged flexible and rigid vegetation; velocity profile; energy coefficients; momentum coefficients

PL

profil prędkości; współczynniki energii; współczynniki pędu

• Wydawca: Instytut Geofizyki PAN ; Springer
• Czasopismo: Acta Geophysica
• Rocznik: 2015
• Tom: Vol. 63, no. 5
• Strony: 1405--1422
• Opis fizyczny: Bibliogr. 17 poz., rys., tab., wykr.

Twórcy

autor

Kubrak E.

• Faculty of Civil and Environmental Engineering, Warsaw University of Life Sciences, Warszawa, Poland

autor

Kubrak J.

• Faculty of Civil and Environmental Engineering, Warsaw University of Life Sciences, Warszawa, Poland

autor

Kiczko A.

• Faculty of Civil and Environmental Engineering, Warsaw University of Life Sciences, Warszawa, Poland

Bibliografia

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