Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 85 for “"nonlinear wave"”.
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Periodic solutions of nonlinear wave equations
This thesis is devoted to the construction of periodic solutions for partial differential equations. The study of periodic solutions was introduced by H. Poincare in the memoire he presented on the three body problem. By looking at periodic and asymptotics solutions he discovered what today we call …
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Nonlinear wave loads on offshore structures
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1995.
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Multi-Symplectic Integrators for Nonlinear Wave Equations
… new numerical schemes to the well known 1D nonlinear Schrödinger and sine-Gordon equations and the 2D Gross-Pitaevskii equation. In sensitive regimes, the spectral MSIs are not only more accurate but are better at capturing the spatial features of the solutions. In particular, for the …
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Discrete Nonlinear Wave Propagation In Kerr Nonlinear Media
… Weakly coupled arrays of single mode channel waveguides have been known to fall into this class of systems since the late 1960's. Nonlinear discrete optics has received a considerable amount of interest in the last few years, triggered by the experimental realization of discrete solitons in a …
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Nonlinear wave interactions in supersonic wind generated waves
… and thermal conductivity of the gas, and nonlinear effects. The main achievement of the present study is an improved method for analyzing wave stability and obtaining quantitative predictions of the wave characteristics.
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Features of nonlinear wave-wave and wave-body interactions
Although nonlinear water waves have been the subject of decades of research, there are many problems that remain unsolved, especially in the cases when one or more of the following factors are involved: high-order nonlinear effects, moving boundaries, wavestructure interactions and complicated …
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Offshore wind turbine nonlinear wave loads and their statistics
… to the dominant frequencies of the linear wave load model, the modeling of the dynamic behavior of the foundation under nonlinear wave loads and analysis of their statistical characteristics have become an important issue for offshore wind turbine design. This thesis derives an approximate …
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Nonlinear wave interactions with submerged obstacles with or without current
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1994.
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Nonlinear wave dynamics of continuum phononic materials with periodic rough contacts
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2024-03-01 without embargo terms
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Scattering and stability properties of nonlinear wave equations on asymptotically flat spacetimes
… is the amalgamation of projects focused on the nonlinear behaviour of hyperbolic partial differential equations (PDEs) in asymptotically flat spacetimes. Each project focuses on the behaviour of solutions nearby special ones and are therefore part of a perturbative understanding of these PDEs. …
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Nonlinear wave modulation in an inviscid and viscous fluids-filled thin viscoelastic tube
This research is aimed to study the modulation of nonlinear wave in an artery filled with blood. In recent years, many researchers have carried out studies on arterial wave modulation with different perspectives related to blood flow. Most of the studies focused on wave modulation in the artery by …
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Experimentally informed modeling of nonlinear wave propagation and phononic behavior in prescribed delaminations
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2027-08-01
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Nonlinear Wave Propagation in Helical Springs by the Method of Characteristics and Finite-Element Method
Made available in DSpace on 2014-12-14T14:42:14Z (GMT). No. of bitstreams: 1 7804159.pdf: 3657121 bytes, checksum: 5824cc2fd849e0047c7f7189a22a5cd3 (MD5) Previous issue date: 1977
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A nonlinear wave load model for extreme and fatigue responses of offshore floating wind turbines
… ocean energy. The accurate prediction of nonlinear hydrodynamic wave loads and the resulting nonlinear motion and tether tension is of crucial importance in the design of floating wind turbines. A new theoretical framework is presented for analyzing hydrodynamic forces on floating bodies …
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Direct simulation and deterministic prediction of large-scale nonlinear ocean wave-field
… approximation of physics, the phase-averaged wave spectrum model has been the only type of tool available for ocean wave prediction in the past 60 years. With the rapid advances in sensing technology, phase-resolved nonlinear wave modeling, and high performance computing capability in recent …
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Analytical and Numerical Studies of the Generation and Propagation of Nonlinear Water Waves by a Wavemaker
The ability to predict the nonlinear effects of extreme wave events is paramount for the preparation of modern experimental tests in large wave basins. Currently, linear theory is routinely used, hence nonlinear wave-wave interactions between propagating waves are often ignored. In addition, the …
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Phase-resolved reconstruction and forecast of nonlinear irregular wave field based on direct numerical simulations
… reconstruction and forecast of ocean wave field based on measurements is of basic scientific interest and practical importance in ocean science and marine engineering. This capability aids and expands the use and interpretation of field and wave basin measurements, contributing to the …
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