A new finite element method for eletromagnetic boundary value problems in combined interior and exterior regions.

Kuzuoğlu, Mustafa


A two-dimensional time-dependent Euler solver for moving boundaries in cartesian grids applied to injection driven internal flows
Pekkan, Kerem; Üçer, Ahmet Ş.; Department of Mechanical Engineering (2000)
Investigation of nonplanar perfectly matched absorbers for finite-element mesh truncation
Kuzuoğlu, Mustafa (1997-03-01)
In this paper, we present a detailed theoretical and numerical investigation of the perfectly matched layer (PML) concept as applied to the problem of mesh truncation in the finite-element method (FEM), We show that it is possible to extend the Cartesian PML concepts involving half-spaces to cylindrical and spherical geometries appropriate for closed boundaries in two and three dimensions by defining lossy anisotropic layers in the relevant coordinate systems, By using the method of separation of variables,...
Investigation of rough surface scattering of electromagnetic waves using finite element method
Aşırım, Özüm Emre; Kuzuoğlu, Mustafa; Özgün, Özlem; Department of Electrical and Electronics Engineering (2013)
This thesis analyzes the problem of electromagnetic wave scattering from rough surfaces using finite element method. Concepts like mesh generation and random rough surface generation will be discussed firstly. Then the fundamental concepts of the finite element method which are the functional form of a given partial differential equation, implementation of the element coefficient matrices, and the assemblage of elements will be discussed in detail. The rough surface and the overall mesh geometry will be imp...
A study on energy trapping parameters of a multistable elastic beam
Zembilören, Ahmet; Gürses, Ercan; Department of Aerospace Engineering (2018)
Energy absorbing systems are being widely used in personnel protection, packaging of special products, aircraft and land vehicles and in many other industries as impact absorbers. Conventional energy absorbing systems absorb impact energy usually by undergoing plastic deformation and thus cannot be reused. A multistable elastic tilted beam can lock in (trap) strain energy when exposed to an impact and can fully recover after unloading. This fully reversible cycle allows repetitive usage of the system for ma...
A methodology for designing tonpilz-type transducers
Çepni, Kerim; Baker, Derek Keıth; Çalışkan, Mehmet; Department of Mechanical Engineering (2011)
Tonpilz-type transducers are the most commonly used projectors in underwater acoustic applications. However, no complete design approach is available in the literature for such transducers. The present study aims to fill this gap in the literature by providing a systematic design approach for the Tonpilz-type transducers. The proposed methodology involves the use of different analytical models and a finite element model of such transducers. Each model provides a different level of accuracy that is tightly c...
Citation Formats
M. Kuzuoğlu, “A new finite element method for eletromagnetic boundary value problems in combined interior and exterior regions.,” Ph.D. - Doctoral Program, Middle East Technical University, 1986.