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Wave analysis - Morten Møller Jakobsen of 7 WAVE ANALYSIS Morten Jakobsen 1.

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Presentation on theme: "Wave analysis - Morten Møller Jakobsen of 7 WAVE ANALYSIS Morten Jakobsen 1."— Presentation transcript:

1 Wave analysis - Morten Møller Jakobsen of 7 WAVE ANALYSIS Morten Jakobsen 1

2 Wave analysis - Morten Møller Jakobsen of 7 Past projects: Wave generation 2 Implementation of irregular 1 st order waves (2D/3D), by superposition Stoke’s 5 th order waves (based on Fenton, only wave speed implemented).

3 Wave analysis - Morten Møller Jakobsen of 7 Past projects: Wave analysis in 3D 3 Implementation of EMLM based on Maximum Likelihood estimate. Very fast (no iteration), but tends to overestimate the width of the directional spreading. Implementation of BDM based on the Bayesian approach Slow..ish (regression analysis), but very accurate compared to EMLM. Both methods are very versatile, supporting various probe types (elevation, velocity, heave, pitch, roll etc.).

4 Wave analysis - Morten Møller Jakobsen of 7 Past projects: Wave analysis in 3D 4 Comparison, based on IAHR test data. Wavelab BDM impl.My BDM impl. My (E)MLM impl. Simple Narrow spread Incident+ Reflected

5 Wave analysis - Morten Møller Jakobsen of 7 Past projects: Evaluation of wave array layout 5 Attempt at creating method usable to determine reliability of wave gauge layout. Based on traditional layouts (cerc5 and cerc6) in comparison with wave gauge arrays of different types. Unfortunately questionable results where found when comparing developed method with simulated results.

6 Wave analysis - Morten Møller Jakobsen of 7 Future projects: Wave forces on offshore structure 6 Probably: Calculation of wave forces on vertical cylinder and buoy type structures. Maybe: Wave prediction in 2D/3D, irregular waves. Maybe: Wave-in-deck forces on Jacket type structure.


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