Naslov
Sediment-Laden Oscillatory Flow in an Idealized Porous Media

Autori
Babić, Marijan ; Bjedov, G. ; Shen, H.T.

Izvornik
Transport in Porous Media (0169-3913) 7 (1992), 2; 187-204

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
porous

Sažetak
Sediment transport and retardation processes within a porous media are modeled using a simple conceptual model. The actual porous media is represented as a regular network of pores. The flow in a single, two-dimensional network laying in the vertical plane is assumed to be representative of the flow in porous media as a whole. The only mechanism for sediment retardation considered here is the settling of sediment in horizontal pores. Assuming laminar flow conditions in each pore, analytical expressions for the conductivity and the rate of sediment deposition in a steady flow are obtained for the case of ‘perfectly regular’ network, in which all pore diameters and lengths are equal. The effect of randomness in pore diameters is investigated in numerical experiments on ‘randomized networks’. The results of the steady sediment flow analysis are applied to the oscillatory-flow problem in a quasi-steady fashion. A quantitative expression for the volume of sediment deposited in one oscillation cycle is obtained. It is beleived that this simple conceptual model can be used to explain wave-induced sediment enrichment in Arctic coastal ice covers.

Izvorni jezik
Engleski

Znanstvena područja
Građevinarstvo

POVEZANOST RADA