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 150 for “"Boundary Element Method"”.
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B-Spline Boundary Element Method for Ships
… of a three dimensional B-Spline based method, which is suitable for the steady-state potential flow analysis of free surface piercing bodies in hydrodynamics, is presented. The method requires the B-Spline or Non Uniform Rational B-Spline (NURBS) representation of the body as an input. …
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Seismic wave modelling using the boundary element method
The main objective of this thesis is to use the boundary element method as an efficient and advantageous numerical approach to model the seismic signals received at selected receiver points due to a source located within a geophysical structure. These signals may travel through different …
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Acoustic Analysis of Spacecraft Cavities using the Boundary Element Method
… resultant structural responses. Linear finite element analysis (FEA) is coupled with the Boundary Element method (BEM) to analyze spacecraft acoustic environments and corresponding structural responses at low frequencies on the order of the structural modes. Analytical capability for predicting …
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Solving variable coefficient partial differential equations using the boundary element method.
… linear variable coefficient PDEs using the boundary element method have been investigated. The application of the boundary element method to these equations is hampered by the difficulty of finding a fundamental solution. In the literature several methods have been proposed to overcome this …
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Thermal analysis of sliding contact systems using the boundary element method
A variation of the boundary element method is developed to determine the distribution of frictional heat and the ensuing surface or subsurface temperature rise caused by frictional heating between sliding solids. The theoretical model consists of two semi-infinite substrates each coated with a film …
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A Boundary Element Method for Thermo-poroelasticity with Applications in Rock Mechanics
… treatment and need to be solved numerically. The boundary element method (BEM) has proven suitable for the poroelastic and thermoelastic problems. In this thesis, a two-dimensional transient indirect BEM is developed to solve coupled thermoporoelastic problems.</p><p>The indirect BEM has two …
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Geometrically nonlinear analysis for an elastic body by the boundary element method
… subject of this study is that of coupling the boundary element method (BEM) and a finite element-like interpolation procedure for the analysis of elastic bodies undergoing large deformations. The nonlinear integral relationships for the problem are described and presented in detail according to …
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A theoretical analysis of combined melting and vaporization using the boundary element method
… the temperature field is usually cumbersome. The Boundary Element Method is proposed as an accurate, efficient way to solve for the temperature field and the interface positions in a phase change problem involving combined melting and vaporization. When comparing to specific one-dimensional test …
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Efficient Large Scale Transient Heat Conduction Analysis Using A Parallelized Boundary Element Method
A parallel domain decomposition Laplace transform Boundary Element Method, BEM, algorithm for the solution of large-scale transient heat conduction problems will be developed. This is accomplished by building on previous work by the author and including several new additions (most note-worthy is …
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The dual boundary element method applied to semi-infinite surface cracks in two-dimensions
… the DBEM. We first detail the derivations of the boundary element and dual boundary element methods. The main difficulty with these methods are integrations of the singular integrals which cannot be accuartely evaluated via standard Gauss quadrature schemes. An analytical integration scheme has …
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A boundary element method with surface conductive absorbers for 3-D analysis of nanophotonics
… for these channels is a new problem for SIE methods, as the methods were initially developed for problems with finite surfaces. In this thesis, we show that the obvious approach for eliminating reflections, making the channel mildly conductive outside the domain of interest, is inaccurate. We …
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A novel boundary element method for low Reynolds number external flow of biological fluid dynamics
… 2013) is detailed and elaborated upon. Aboundary integral representation that matches an outer Oseen flow and inner Stokes flow is given, and the matching error is shown to be smallest when the outer domain is as close as possible to the body. Also, it is shown that as the origin of the …
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The Computation of Exact Green's Functions in Acoustic Analogy By a Spectral Collocation Boundary Element Method
… technology, most of the current noise prediction methods are computationally efficient. However, the ability to effectively apply an approach to complex airframe geometries continues to challenge researchers. The objective of this research is to develop and analyze a robust noise prediction method …
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A time marching boundary element method for the prediction of the flow around surface piercing hydrofoils
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1996, and Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1995.
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A 3-D vortex-boundary element method for the simulation of unsteady, high Reynolds number flows
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1995.
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