Publisher DOI: 10.1115/OMAE2021-62409
Title: Reconstruction of ocean surfaces from randomly distributed measurements using a grid-based method
Language: English
Authors: Desmars, Nicolas 
Hartmann, Moritz Cornelius Nikolaus  
Behrendt, Jasper 
Klein, Marco  
Hoffmann, Norbert  
Issue Date: Jun-2021
Source: International Conference on Ocean, Offshore and Arctic Engineering (OMAE 2021)
Abstract (english): 
In view of deterministic ocean wave prediction, we introduce and investigate a new method to reconstruct ocean surfaces based on randomly distributed wave measurements. Instead of looking for the optimal parameters of a wave model through the minimization of a cost function, our approach directly solves the free surface dynamics - coupled with an interpolation operator - for the quantities of interest (i.e., surface elevation and velocity potential) at grid points that are used to compute the relevant operators. This method allows a high flexibility in terms of desired accuracy and ensures the physical consistency of the solution. Using the linear wave theory and unidirectional wave fields, we validate the applicability of the proposed method. In particular, we show that our grid-based method is able to reach similar accuracy than the wave-model parameterization method at a reasonable cost.
Conference: 40th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2021 
ISBN: 978-079188516-1
Institute: Strukturdynamik M-14 
Konstruktion und Festigkeit von Schiffen M-10 
Document Type: Chapter/Article (Proceedings)
Project: Echtzeitprognose der Bewegung von Offshore-Strukturen im Seegang; Nichtlineare Prognose von Seegang und Strukturbewegung, Wellenableitung und Implementierung 
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