Sökning: "coordinates"

Visar resultat 6 - 10 av 179 avhandlingar innehållade ordet coordinates.

  1. 6. Wave Splitting and Effective Boundary Conditions for Structural Elements

    Författare :Martin Johansson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; approximate boundary condition; Mindlin plate; Timoshenko beam; thin plates; cylindrical coordinates; series approximation; wave splitting; dispersion; fluid-loaded plate; Biot;

    Sammanfattning : The subject of this thesis is twofold. The first part concerns the wave splitting of structural elements. The second part concerns approximate boundary conditions for fluid-loaded thin plates. Wave splitting is a mathematical tool for the formulation of scattering problems in the time domain that aims at solving inverse problems, e. LÄS MER

  3. 7. A hybrid high order method for simulation of turbulent flow in complex geometries

    Författare :Arnim Brüger; KTH; []
    Nyckelord :Navier-Stokes; high order; spectral methods; curvilinear coordinates; approximate factorization; iterative methods; turbulence;

    Sammanfattning : .... LÄS MER

  4. 8. Photon geometry, internal coordinates and higher symmetries for elementary particles

    Författare :Arne Kihlberg; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : .... LÄS MER

  5. 9. Design of High Performance Computing Software for Genericity and Variability

    Författare :Malin Ljungberg; Michael Thuné; Kurt Otto; Hans Petter Langtangen; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; PDE solver; high-performance; coordinate invariant; curvilinear coordinates; symmetry exploiting; generalized Fourier transform; finite difference; expression templates; feature modeling; variability; Beräkningsvetenskap; Scientific Computing;

    Sammanfattning : Computer simulations have emerged as a cost efficient complement to laboratory experiments, as computers have become increasingly powerful. The aim of the present work is to explore the ideas of some state of the art software development practices, and ways in which these can be useful for developing high performance research codes. LÄS MER

  7. 10. Determination of separation coordinates for potential and quasi-potential Newton systems

    Författare :Claes Waksjö; Sergio Benenti; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; MATHEMATICS; MATEMATIK;

    Sammanfattning : When solving Newton systems q = M(q), q ϵ Rn, by the method of separation of variables, one has to determine coordinates in which the related Hamilton-Jacobi equation separates.The problem of finding separation coordinates for potential Newton systems q = -∇V (q) goes back ta Jacobi. LÄS MER