Search for dissertations about: "G. Larson"

Showing result 1 - 5 of 14 swedish dissertations containing the words G. Larson.

  2. 1. Analysis of Adaptive Finite Element Methods

    Author : Mats G Larson; Göteborgs universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : This thesis is concerned with the analysis and design of adaptive finite element methods for a variety of differential equations in mechanics and physics, including linear and semilinear elliptic equations, eigenvalue problems, the stationary Navier-Stokes equations, and Hamiltonian systems. The analysis focuses on sharp a posteriori error estimates, sharp a priori error estimates, stability properties, and the design of adaptive algorithms. READ MORE

  4. 2. Contributions to Modelling and Visualisation of Multibody Systems Simulations with Detailed Contact Analysis

    Author : Alexander Siemers; Dag Fritzson; Peter Fritzson; Mats G. Larson; Linköpings universitet; []
    Keywords : TECHNOLOGY; TEKNIKVETENSKAP;

    Abstract : The steadily increasing performance of modern computer systems is having a large influence on simulation technologies. It enables increasingly detailed simulations of larger and more comprehensive simulation models. Increasingly large amounts of numerical data are produced by these simulations. READ MORE

  5. 3. Reliable hp finite element computations of scattering resonances in nano optics

    Author : Juan Carlos Araujo-Cabarcas; Christian Engström; David Cohen; Mats G. Larson; Jeffrey Ovall; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Scattering resonances; Helmholtz problems; pseudospectrum; Lippmann-Schwinger equation; finite element methods; nonlinear eigenvalue problems; spurious solutions;

    Abstract : Eigenfrequencies are commonly studied in wave propagation problems, as they are important in the analysis of closed cavities such as a microwave oven. For open systems, energy leaks into infinity and therefore scattering resonances are used instead of eigenfrequencies. READ MORE

  6. 4. Duality-based adaptive finite element methods with application to time-dependent problems

    Author : August Johansson; Mats G. Larson; Paul Houston; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; finite element methods; dual-weighted residual method; multiphysics; a posteriori error estimation; adaptive algorithms; discontinuous Galerkin; MATHEMATICS; MATEMATIK; Mathematics; matematik;

    Abstract : To simulate real world problems modeled by differential equations, it is often not sufficient to  consider and tackle a single equation. Rather, complex phenomena are modeled by several partial dierential equations that are coupled to each other. READ MORE

  7. 5. Cut finite element methods on parametric multipatch surfaces

    Author : Tobias Jonsson; Mats G. Larson; Karl Larsson; Johan Hoffman; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Cut finite element method; Nitsche method; a priori error estimation; Mathematics; matematik;

    Abstract : .... READ MORE