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The Peregrine Breather, an analytical solution of the Nonlinear Schroedinger Equation, is
modified to induce locally a. temporally accurate, predefined extreme waves in an
arbitrary dir. sea state.

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Abstract English:
The Peregrine Breather, an analytical solution of the Nonlinear Schroedinger Equation, is
modified to induce locally and temporally accurate, predefined extreme wave events in an
arbitrary directed sea state. To this end, a parameter study of the distortion term of the
unstable Peregrine modulation is performed to enforce form, height, and steepness of the rogue
wave. In addition, the phase modulation is identified to be the crucial perturbation for the
nonlinear Breather dynamic. With this knowledge, the inducing of a predefined rogue wave
in non-uniform carrier waves and even in irregular, directed sea states is presented, its limits
determined, and the Breather dynamics analyzed by spectral and phase evolution analysis in
time and space. The results are compared to the dynamics of real occurred extreme waves and
a reverse engineering as well as a forecast model for nonlinear real rogue waves are depicted
briefly.

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Witt, Andy
08/2017 - today: Founder & Business Executive of CALC4XL GmbH
04/2013 - 08/2017: Research Associate of the Technical University Hamburg
Analytical, Numerical, and Experimental Studies on Wave Dynamics
Besides: Giving Lectures, Supervising Exams
03/2013: Engineering Diploma Graduation
Thesis: ´ Fast Multipole and Graphics Processing Unit Computation
Accelerated High Order Boundary Element Method´
04/2007 - 02/2012: Product Manager at Software Company FACTON GmbH
04/2004 - 04/2007: Customer Service at Biotech Company QIAGEN N.V.
02/2004: Granted Study Scholarship of the German National Academic Foundation
10/2003: Start of Studies at the Technical University Hamburg
IT-Engineering Majoring in Technical Dynamics (Applied Physics)
and Scientific Arithmetics (Applied Mathematics)

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