Sökning: "Bertil Gustafsson"
Visar resultat 21 - 22 av 22 avhandlingar innehållade orden Bertil Gustafsson.
21. Fourth order symmetric finite difference schemes for the wave equation
Sammanfattning : The solution of the acoustic wave equation in one space dimension is studied. The PDE is discretized using finite element approximation. A cubic piecewise Lagrange polynomial is used as basis. Consistent finite element and lumped mass schemes are obtained. LÄS MER
22. High Order Symmetric Finite Difference Schemes for the Acoustic Wave Equation
Sammanfattning : When someone speaks, or when a piano is played, sound waves are spread through the room. Physically the propagation of sound is governed by the acoustic wave equation. This thesis deals with the problem of finding solutions to this equation by numerical methods. LÄS MER