1 Hydraulics and Coastal Engineering, The Faculty of Engineering and Science (ENG), Aalborg University, VBN2 Department of Civil Engineering, The Faculty of Engineering and Science (ENG), Aalborg University, VBN3 unknown4 Division of Reliability, Dynamics and Marine Engineering, The Faculty of Engineering and Science, Aalborg University, VBN
new measurements and new ideas
The results of an extensive series of permeability experiments originally analysed by Shih (1990) are reinterpreted in the light of new experiments. It is proposed that the Forchheimer equation might not fully describe flow at the high Reynolds numbers found in the interior of rubble material. A new series of tests designed to test for deviations from the Forchheimer equation and investigate the effects of material shape are described. While no evidence can be found to indicate a deviation from the Forchheimer equation a dependency of permeability and the surface roughness the material is demonstrated.
Coastal Engineering 1992: 23rd International Conference on Coastal Engineering, 4-9 October 1992, Venice, 1992, p. 1720-1733