Publisher DOI: 10.1016/j.oceaneng.2017.10.009
arXiv ID: 1705.06940v2
Title: Analytical prediction of reflection coefficients for wave absorbing layers in flow simulations of regular free-surface waves
Language: English
Authors: Peric, Robinson 
Abdel-Maksoud, Moustafa 
Keywords: Physics - Fluid Dynamics;Physics - Fluid Dynamics
Issue Date: 1-Jan-2018
Source: Ocean Engineering (147): 132-147 (2018-01-01)
Journal or Series Name: Ocean engineering 
Abstract (english): Undesired wave reflections, which occur at domain boundaries in flow simulations with free-surface waves, can be minimized by applying source terms in the vicinity of the boundary to damp the waves. Examples of such approaches are absorbing layers, damping zones, forcing zones, relaxation zones and sponge layers. A problem with these approaches is that the effectivity of the wave damping depends on the parameters in the source term functions, which are case-dependent and must be adjusted to the wave. The present paper presents a theory which analytically predicts the reflection coefficients and which can be used to optimally select the source term parameters before running the simulation. The theory is given in a general form so that it is applicable to many existing implementations. It is validated against results from finite-volume-based flow simulations of regular free-surface waves and found to be of satisfactory accuracy for practical purposes.
ISSN: 0029-8018
Institute: Fluiddynamik und Schiffstheorie M-8 
Type: (wissenschaftlicher) Artikel
Project: Minimierung unerwünschter Wellenreflexionen an den Gebietsrändern in Strömungssimulationen mit freier Oberfläche basierend auf den Navier-Stokes Gleichungen 
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