Chapter
Apr 26, 2012
Performance of Numerical Boundary Condition Based on Active Wave Absorption System
Publication: Coastal Engineering 2000
Abstract
The implementation and performance of a new active wave generating-absorbing boundary condition for a numerical model based on the Volume Of Fluid (VOF) method for tracking free surfaces is presented. This numerical boundary condition AWAVOF is based on an active wave absorption system that was first developed in the context of physical wave flume experiments, using a wave paddle. The method applies to regular and irregular waves. Velocities are measured at one location inside the computational domain. The reflected wave train is separated from the incident wave field in front of a structure by means of digital filtering and subsequent superposition of the measured velocity signals. The incident wave signal is corrected, so that the reflected wave is effectively absorbed at the boundary. The effectiveness of the active wave generating-absorbing boundary condition is proved using numerical simulations with VOFbreak2.
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© 2001 American Society of Civil Engineers.
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Published online: Apr 26, 2012
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Dept. of Civil Engineering, Ghent University, Technologiepark 9, B-9052 Zwijnaarde, Belgium.E-mail: [email protected]
Julien De Rouck
Dept. of Civil Engineering, Ghent University, Technologiepark 9, B-9052 Zwijnaarde, Belgium.
Peter Frigaard
Hydraulics & Coastal Engineering Laboratory, Aalborg University, Aalborg, Denmark
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