A Paralinearization of the 2d and 3d Gravity Water Wave System in Infinite Depth

A Paralinearization of the 2d and 3d Gravity Water Wave System in Infinite Depth

Author: Stanley Paul Palasek

Publisher:

Published: 2017

Total Pages: 0

ISBN-13:

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We consider the 2d and 3d water waves system with gravity and no surface tension in infinite depth. Loss of derivatives from the Dirichlet-to-Neumann operator make studying solutions for long times difficult and until recently only local results were available. Several authors have since made use of paradifferential calculus to overcome these difficulties and prove global regularity in 2d and 3d with and without surface tension. The purpose of this thesis is to formulate the paralinearization of the system based on the Weyl quantization due to Deng-Ionescu-Pausader-Pusateri but with several key modifications. Namely, we work in lower regularity L2-based Sobolev spaces and do not include surface tension. This makes the problem more difficult by reducing the regularity on the surface elevation. We flatten the interface to arrive at a paralinearization of the Dirichlet-to-Neumann operator. As a result we are able to paralinearize and symmetrize the entire system and derive a single equation for a single complex unknown. The result is suited for obtaining energy estimates that would be useful, for example, when proving rigorous modulation approximations to the water waves in various regimes.


Nonlinear Water Waves

Nonlinear Water Waves

Author: David Henry

Publisher: Springer Nature

Published: 2019-11-27

Total Pages: 218

ISBN-13: 3030335364

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The motion of water is governed by a set of mathematical equations which are extremely complicated and intractable. This is not surprising when one considers the highly diverse and intricate physical phenomena which may be exhibited by a given body of water. Recent mathematical advances have enabled researchers to make major progress in this field, reflected in the topics featured in this volume. Cutting-edge techniques and tools from mathematical analysis have generated strong rigorous results concerning the qualitative and quantitative physical properties of solutions of the governing equations. Furthermore, accurate numerical computations of fully-nonlinear steady and unsteady water waves in two and three dimensions have contributed to the discovery of new types of waves. Model equations have been derived in the long-wave and modulational regime using Hamiltonian formulations and solved numerically. This book brings together interdisciplinary researchers working in the field of nonlinear water waves, whose contributions range from survey articles to new research results which address a variety of aspects in nonlinear water waves. It is motivated by a workshop which was organised at the Erwin Schrödinger International Institute for Mathematics and Physics in Vienna, November 27-December 7, 2017. The key aim of the workshop was to describe, and foster, new approaches to research in this field. This is reflected in the contents of this book, which is aimed to stimulate both experienced researchers and students alike.


Some New Gravity Waves in Water of Finite Depth

Some New Gravity Waves in Water of Finite Depth

Author: Jean-Marc Vanden-Broeck

Publisher:

Published: 1983

Total Pages: 18

ISBN-13:

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In a recent paper Chen and Saffman showed that periodic gravity waves in water of infinite depth are not unique. They presented explicit computations for new families of waves which they termed irregular waves. In the present paper the authors give conclusive numerical evidence that periodic gravity waves in water of arbitrary uniform depth are not unique. Explicit computations of irregular waves in water of finite depth are presented. In addition, they show that Chen and Saffman's bifurcation point for an irregular wave of class 2 is not unique. Results suggest the existence of an infinite number of such bifurcation points.


The Water Waves Problem

The Water Waves Problem

Author: David Lannes

Publisher: American Mathematical Soc.

Published: 2013-05-08

Total Pages: 347

ISBN-13: 0821894706

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This monograph provides a comprehensive and self-contained study on the theory of water waves equations, a research area that has been very active in recent years. The vast literature devoted to the study of water waves offers numerous asymptotic models.


The Global Nonlinear Stability of the Minkowski Space (PMS-41)

The Global Nonlinear Stability of the Minkowski Space (PMS-41)

Author: Demetrios Christodoulou

Publisher: Princeton University Press

Published: 2014-07-14

Total Pages: 525

ISBN-13: 1400863171

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The aim of this work is to provide a proof of the nonlinear gravitational stability of the Minkowski space-time. More precisely, the book offers a constructive proof of global, smooth solutions to the Einstein Vacuum Equations, which look, in the large, like the Minkowski space-time. In particular, these solutions are free of black holes and singularities. The work contains a detailed description of the sense in which these solutions are close to the Minkowski space-time, in all directions. It thus provides the mathematical framework in which we can give a rigorous derivation of the laws of gravitation proposed by Bondi. Moreover, it establishes other important conclusions concerning the nonlinear character of gravitational radiation. The authors obtain their solutions as dynamic developments of all initial data sets, which are close, in a precise manner, to the flat initial data set corresponding to the Minkowski space-time. They thus establish the global dynamic stability of the latter. Originally published in 1994. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.


The Nonlinear Schrödinger Equation

The Nonlinear Schrödinger Equation

Author: Catherine Sulem

Publisher: Springer Science & Business Media

Published: 2007-06-30

Total Pages: 363

ISBN-13: 0387227687

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Filling the gap between the mathematical literature and applications to domains, the authors have chosen to address the problem of wave collapse by several methods ranging from rigorous mathematical analysis to formal aymptotic expansions and numerical simulations.


Fluid Dynamics at Interfaces

Fluid Dynamics at Interfaces

Author: Wei Shyy

Publisher: Cambridge University Press

Published: 1999-09-28

Total Pages: 482

ISBN-13: 9780521642668

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In this book experts discuss research and applications in interfacial fluid dynamics.


Para-Differential Calculus and Applications to the Cauchy Problem for Nonlinear Systems

Para-Differential Calculus and Applications to the Cauchy Problem for Nonlinear Systems

Author: Guy Métivier

Publisher: Edizioni della Normale

Published: 2008-07-17

Total Pages: 170

ISBN-13:

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The main aim is to present at the level of beginners several modern tools of micro-local analysis which are useful for the mathematical study of nonlinear partial differential equations. The core of these notes is devoted to a presentation of the para-differential techniques, which combine a linearization procedure for nonlinear equations, and a symbolic calculus which mimics or extends the classical calculus of Fourier multipliers. These methods apply to many problems in nonlinear PDE’s such as elliptic equations, propagation of singularities, boundary value problems, shocks or boundary layers. However, in these introductory notes, we have chosen to illustrate the theory on two selected and relatively simple examples, which allow becoming familiar with the techniques. They concern the well posed-ness of the Cauchy problem for systems of nonlinear PDE's, firstly hyperbolic systems and secondly coupled systems of Schrödinger equations which arise in various models of wave propagation.