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http://dx.doi.org/10.7843/kgs.2015.31.7.13

An Analytical Solution of Flow and Progressive Wave-Induced Residual Pore Water Pressure in Seabed  

Lee, Kwang-Ho (Dept. of Energy Resources and Plant Eng., Catholic Kwandong Univ.)
Kim, Dong-Wook (Dept. of Civil and Environmental Eng., Korea Maritime and Ocean Univ.)
Kang, Gi-Chun (Dam & Watershed Maintenance Dept., K-water)
Kim, Do-Sam (Dept. of Civil Eng., Korea Maritime and Ocean Univ.)
Kim, Tae-Hyung (Dept. of Civil Eng., Korea Maritime and Ocean Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.31, no.7, 2015 , pp. 13-28 More about this Journal
Abstract
This study extended the Lee et al.'s (2015a) solution which improved the existing analytical solution for prediction of the residual pore water pressure into progressive wave and flow coexisting field. At this time, the variation of incident wave period and wave length should be incorporated to Lee et al.'s (2015a) analytical solution, which does not consider flow. For the case of infinite thickness, the new analytical solution using Fourier series was compared to the analytical solution using Laplace transformation proposed by Jeng and Seymour (2007). It was verified that the new solution was identical to the Jeng and Seymour's solution. After verification of the new analytical solution, the residual pore water pressure head was examined closely under various given values of flow velocity's magnitude, direction, incident wave's period and seabed thickness. In each proposed analytical solution, asymptotic approach to shallow depth with the changes in the soil thickness within finite soil thickness was found possible, but not to infinite depth. It is also identified that there exists a discrepancy case between the results obtained from the finite and the infinite seabed thicknesses even on the same soil depth.
Keywords
Seabed; Residual pore water pressure; Interaction between flow and progress wave; Analytical solution;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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