DYNAMIC-RESPONSE OF POROELASTIC BED TO WATER-WAVES

Authors
Citation
Lh. Huang et Ch. Song, DYNAMIC-RESPONSE OF POROELASTIC BED TO WATER-WAVES, Journal of hydraulic engineering, 119(9), 1993, pp. 1003-1020
Citations number
17
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Engineering, Mechanical","Engineering, Civil","Water Resources
ISSN journal
0733-9429
Volume
119
Issue
9
Year of publication
1993
Pages
1003 - 1020
Database
ISI
SICI code
0733-9429(1993)119:9<1003:DOPBTW>2.0.ZU;2-B
Abstract
The problem of a small-amplitude water wave propagating in a channel o f constant depth with a horizontal poroelastic bed of infinite thickne ss is investigated. Using the theory of poroelasticity derived in Huan g and Chwang (1990), three decoupled Helmholtz equations are applied t o study the present problem. The general solution is obtained, and fiv e physical parameters, m, epsilon, LAMBDA, PI, PSI, for the porous med ia flow are defined. The first of these physical parameters represents the relative stiffness of solid and fluid, the second represents pene trability, while the other three reveal Mach numbers of two longitudin al waves and one transverse wave of the porous medium when penetrabili ty is low, i.e., when \\epsilon\\ <<1. It is believed that these param eters will be especially useful for experimental modeling. We not only clarify the required constraints of Yamamoto et al. (1978) and Liu (1 973) that are not explained in their articles, but also demonstrate su ccessfully the generality of the present work.