A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Analysis of orthogonal wave reflection by a caisson with open front chamber filled with sloping rubble mound
Abstract A new combined caisson, including an open window on the front wall and an internal rubble mound with a slope, has been proposed and used in Italy. This study presents a semi-analytical solution to estimate the wave absorbing performance of the new combined caisson with regard to orthogonal wave attack. The internal slope of the rubble mound is assumed to be a series of horizontal steps. Then the matched eigenfunction expansions are used to develop the semi-analytical solution. The square-root singularity of fluid velocity at the upper tip of the front submerged wall is incorporated into the solution to enhance the convergence of calculated results. The new semi-analytical solution is confirmed by an independently developed multi-domain boundary element method solution. Also the predictions of the semi-analytical solution agree reasonably well with experimental data. Based on both the calculations and the experimental data, some useful results are presented for practical engineering.
Highlights We developed a new semi-analytical solution for predicting wave reflection. We validated the theory by means of BEM method. We compared the solution with laboratory tests performed on combined caissons. We found a very good agreement both with BEM and with experiments. To get smaller reflection three main geometrical parameters must be controlled.
Analysis of orthogonal wave reflection by a caisson with open front chamber filled with sloping rubble mound
Abstract A new combined caisson, including an open window on the front wall and an internal rubble mound with a slope, has been proposed and used in Italy. This study presents a semi-analytical solution to estimate the wave absorbing performance of the new combined caisson with regard to orthogonal wave attack. The internal slope of the rubble mound is assumed to be a series of horizontal steps. Then the matched eigenfunction expansions are used to develop the semi-analytical solution. The square-root singularity of fluid velocity at the upper tip of the front submerged wall is incorporated into the solution to enhance the convergence of calculated results. The new semi-analytical solution is confirmed by an independently developed multi-domain boundary element method solution. Also the predictions of the semi-analytical solution agree reasonably well with experimental data. Based on both the calculations and the experimental data, some useful results are presented for practical engineering.
Highlights We developed a new semi-analytical solution for predicting wave reflection. We validated the theory by means of BEM method. We compared the solution with laboratory tests performed on combined caissons. We found a very good agreement both with BEM and with experiments. To get smaller reflection three main geometrical parameters must be controlled.
Analysis of orthogonal wave reflection by a caisson with open front chamber filled with sloping rubble mound
Liu, Yong (author) / Faraci, Carla (author)
Coastal Engineering ; 91 ; 151-163
2014-05-19
13 pages
Article (Journal)
Electronic Resource
English
| British Library Online Contents | 2014
Reflection Coefficients of the Step-Shaped Slit Caisson on the Rubble Mound
| British Library Conference Proceedings | 1997
Wave Reflection and Wave Run-Up at Rubble Mound Breakwaters
| British Library Conference Proceedings | 2007