Air-Water Flow in Coarse Granular Media

by Alim A. Hannoura, (A.M.ASCE), Lect. and Research Asst.; Civ. Engrg. Dept., Univ. of Windsor, Windsor, Ontario, Canada,
John A. McCorquodale, (A.M.ASCE), Prof. of Civ. Engrg.; Univ. of Windsor, Windsor, Ontario, Canada,

Serial Information: Journal of the Hydraulics Division, 1978, Vol. 104, Issue 7, Pg. 1001-1010

Document Type: Journal Paper


Air may be entrained in the flow in porous shore structure under wave action. Three conceptual models for two-phase flow in ducts have been adapted to describe flow in coarse granular media. These are the homogeneous, bubbly drift-flux, and slug drift-flux models. An experimental study was undertaken to check the three models against air-water flow in three coarse granular porous media. The best model was chosen based on its agreement with the experimental head drop results. On this basis the slug flow drift-flux model is recommended to calculate the effect of entrained air on the hydraulic conductivity for co-current and counter current flows.

Subject Headings: Porous media flow | Air flow | Granular materials | Entrainment | Hydraulic models | Shores | Wave action | Stratified flow

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