Wave Transmission through Porous Structures

by Ole Secher Madsen, Asst. Prof.; Ralph M. Parsons Lab., Dept. of Civ. Engrg., Massachusetts Inst. of Tech., Cambridge, MA,

Serial Information: Journal of the Waterways, Harbors and Coastal Engineering Division, 1974, Vol. 100, Issue 3, Pg. 169-188

Document Type: Journal Paper


Assuming long, normally incident waves on a homogeneous porous structure of rectangular cross section, a simple explicit solution for the transmission and reflection coefficients are obtained from a linearized theory. The relationship between the nonlinear flow resistance in the porous medium and its equivalent linear form is obtained in explicit form. Empirical relationships for the nonlinear flow resistance are reviewed and are shown to lead to acceptable estimates of the hydraulic properties of a porous medium. Using the empirical relationships for the hydraulic properties of a porous material in conjunction with the explicit simple solution for the reflection and transmission coefficients leads to results comparable to the results of other more time-consuming procedures.

Subject Headings: Flow resistance | Porous media flow | Hydraulic properties | Power transmission | Porous media | Linear functions | Load and resistance factor design | Empirical equations

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