Sökning: "simultaneous approximation term"

Visar resultat 11 - 13 av 13 uppsatser innehållade orden simultaneous approximation term.

  1. 11. Efficient Wave Propagation in Discontinuous Media and Complex Geometry for Many-core Architectures

    Uppsats för yrkesexamina på avancerad nivå, Institutionen för informationsteknologi

    Författare :Tobias Skoglund; [2012]
    Nyckelord :;

    Sammanfattning : We present an accelerated numerical solver for the scalar wave equation using one and two GPUs. We consider complex geometry and study accuracy when performing the computation in both single and double precision. The method uses a high-order accurate approximation of the derivatives using summation-by-parts operators. LÄS MER

  3. 12. Coupled High-Order Finite Difference and Unstructured Finite Volume Methods for Earthquake Rupture Dynamics in Complex Geometries

    Uppsats för yrkesexamina på avancerad nivå, Institutionen för informationsteknologi

    Författare :Ossian O'Reilly; [2011]
    Nyckelord :SBP summation-by-parts SAT simultaneous-approximation-term unstructured finite volume methods high order finite difference methods interface coupling earthquake rupture dynamics complex geometries;

    Sammanfattning : The linear elastodynamic two-dimensional anti-plane stress problem, where deformations occur in only one direction is considered for one sided non-planar faults. Fault dynamics are modeled using purely velocity dependent friction laws, and applied on boundaries with complex geometry. LÄS MER

  4. 13. Simulation of Wave Propagation in Discontinuous Media and Complex Geometries

    Master-uppsats, Institutionen för informationsteknologi

    Författare :Kristoffer Virta; [2010]
    Nyckelord :;

    Sammanfattning : A strictly stable high order finite difference (HOFD) scheme for the scalar wave equation with discontinuous coefficients corresponding to inhomogeneity in the underlying media is constructed using summation - by - parts (SBP) operators. The domain of the equation is allowed to be complex in the sense that it can not be smoothly mapped from the unit square. LÄS MER