IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
Log On
About IAHRDirectoryCommitteesMy IAHRNews & JournalseLibraryeShopEventsJoin IAHRWorld CongressDonate
spacer.gif
spacer.gif eLibrary
spacer.gif eLibrary
You are here : eLibrary : IAHR World Congress Proceedings : 36th Congress - The Hague (2015) FULL PAPERS : THEME 1- MANAGING DELTAS : WAVE OVERTOPPING NUMERICAL SIMULATION USING OPENFOAM
WAVE OVERTOPPING NUMERICAL SIMULATION USING OPENFOAM
Author : KARAGIANNIS N. , KARAMBAS TH. & KOUTITAS CHR.
A numerical model has been developed and implemented with the open source toolbox OpenFoam and the additional toolbox waves2Foam (Jacobsen et al. 2012), in order to investigate the wave overtopping physical process on inclined impermeable structures. RANS (Reynolds averaged Navier Stokes) equations are solved in conjunction with the k-? SST turbulence model ones, while VOF (Volume of fluid) method is used to track the free surface. Surface elevation and depth averaged velocities are obtained from the model and the average overtopping rate is calculated and compared to semi- empirical formulae from literature. Iribarren number as a criterion of breaking waves, the slope angle, freeboard in relation to wave height, and the wave steepness are the most important factors which determine the average overtopping rate. o According to Kofoed (2002), a slope of 1:1.73, namely 30 angle, is considered optimal for the wave overtopping and that angle is implemented in the model. A wave steepness of around 0.033 is regarded as optimal for the maximum overtopping rate as well. Extended investigation on wave characteristics and freeboard was made and the results, which are in good agreement with empirical formulae, are presented herein.
File Size : 914,580 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) FULL PAPERS
Article : THEME 1- MANAGING DELTAS
Date Published : 18/04/2016
Download Now