Sökning: "boundary penalty method"

Visar resultat 6 - 10 av 10 avhandlingar innehållade orden boundary penalty method.

  1. 6. High Order Cut Finite Element Methods for Wave Equations

    Författare :Simon Sticko; Gunilla Kreiss; Mats G. Larson; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Cut finite element; Wave equation; Immersed; Fictitious domain; Beräkningsvetenskap med inriktning mot numerisk analys; Scientific Computing with specialization in Numerical Analysis;

    Sammanfattning : This thesis considers wave propagation problems solved using finite element methods where a boundary or interface of the domain is not aligned with the computational mesh. Such methods are usually referred to as cut or immersed methods. LÄS MER

  3. 7. Memory Efficient Methods for Eulerian Free Surface Fluid Animation

    Författare :Andreas Söderström; Ken Museth; Matts Karlsson; Jos Stam; Linköpings universitet; []
    Nyckelord :TECHNOLOGY; TEKNIKVETENSKAP;

    Sammanfattning : This thesis focuses on improving and extending the available toolset for Eulerian, i.e. grid based, free surface fluid animation and level set based surface tracking in the context of computer graphics and visual effects. LÄS MER

  4. 8. Stability, dual consistency and conservation of summation-by-parts formulations for multiphysics problems

    Författare :Fatemeh Ghasemi Zinatabadi; Jan Nordström; Thomas Hagstrom; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : In this thesis, we consider the numerical solution of initial boundary value problems (IBVPs). Boundary and interface conditions are derived such that the IBVP under consideration is well-posed. We also study the dual problem and the related dual boundary/interface conditions. LÄS MER

  5. 9. Stable High Order Finite Difference Methods for Wave Propagation and Flow Problems on Deforming Domains

    Författare :Samira Nikkar; Jan Nordström; Gunilla Kreiss; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : We construct stable, accurate and efficient numerical schemes for wave propagation and flow problems posed on spatial geometries that are moving, deforming, erroneously described or non-simply connected. The schemes are on Summation-by-Parts (SBP) form, combined with the Simultaneous Approximation Term (SAT) technique for imposing initial and boundary conditions. LÄS MER

  7. 10. Experimental Study of Outlet Guide Vane Heat Transfer and Gas Turbine Internal Cooling

    Författare :Chenglong Wang; Värmeöverföring; []
    Nyckelord :;

    Sammanfattning : Heat transfer in gas turbine related applications is investigated by steady state liquid crystal thermography (LCT) in this thesis. The work presented includes outlet guide vane heat transfer and gas turbine internal cooling. LÄS MER