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 227 for “"Boundary Element"”.
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Galerkin boundary element methods with multiwavelets
In general the numerical solution of boundary integral equations arising from the reformulationof partial differential equations leads to full coefficient matrices. The discretesystem can be solved in O(N2 ) operations by iterative solvers of the ConjugateGradient type possibly with a …
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An interactive boundary element analysis system
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil Engineering, 1985.
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B-Spline Boundary Element Method for Ships
… which already satisfies the linear free surface boundary conditions, but uses a separate source patch for the free surface. By eliminating the use of a free surface Green's function, the method can be extended to considering non-linear free surface conditions, thus providing the possibility for …
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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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Inverse Boundary Element/genetic Algorithm Method For Reconstruction O
… in the metal endwall/shroud is solved using the boundary element method (bem), and the inverse problem is solved using a genetic algorithm (ga). Thermal conditions are overspecified at exposed surfaces amenable to measurement, while the temperature and surface heat flux distributions are unknown …
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High Order Technologies in Boundary Element Methods: Analyses, Algorithms, Applications
L'abstract è presente nell'allegato / the abstract is in the attachment
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Boundary element technique for in homogenous elasto-viscoplastic analysis, A
Includes bibliographical references.
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Boundary element simulation of oscillating foil with leading-edge separation
… account for the leading-edge separation for the boundary element simulation of the oscillating foil with potential flow assumption. Similar to the trailing-edge separation, the leading-edge separation is modeled by a thin shear layer. Because the leading edge is rounded which is different from …
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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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Paradigms for Fast and Stable Boundary Element Methods in Computational Electromagnetics
L'abstract è presente nell'allegato / the abstract is in the attachment
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Use of Graded Laser Scanning to Generate Efficient Boundary Element Meshes
… combines a reverse engineering technique with boundary element stress analysis, by generating a graded mesh to improve the simulation efficiency. A rectangular metal plate, a bar of a circular cross section, a gas turbine blade and a steam turbine blade were scanned at different resolutions …
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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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Galerkin Boundary Element Modeling of Three-Dimensional Functionally Graded Material Systems
… science research, are explored in the context of boundary element method. This investigation includes developing new modules for viewing the boundary and the domain data using modern visualization tools, developing virtual reality based visualization and concluding with web based interactive …
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Boundary element and finite element methods for moving boundary electrochemical problems
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1983.
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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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Exploring the Limits of Boundary Element Methods for Wave Energy Converter Hydrodynamics
Boundary element methods (BEM) are used to calculate frequency-domain representations of hydrody-namic forces for moored and floating objects such as wave energy converters (WECs). The representations– excitation, added mass, and radiation damping in up to six degrees of freedom– define and scale …
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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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