Sökning: "Thomas Hagstrom"
Hittade 4 avhandlingar innehållade orden Thomas Hagstrom.
1. Stable Numerical Methods with Boundary and Interface Treatment for Applications in Aerodynamics
Sammanfattning : In numerical simulations, problems stemming from aerodynamics pose many challenges for the method used. Some of these are addressed in this thesis, such as the fluid interacting with objects, the presence of shocks, and various types of boundary conditions. LÄS MER
2. Stability, dual consistency and conservation of summation-by-parts formulations for multiphysics problems
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
3. Stable High-Order Finite Difference Methods for Aerodynamics
Sammanfattning : In this thesis, the numerical solution of time-dependent partial differential equations (PDE) is studied. In particular high-order finite difference methods on Summation-by-parts (SBP) form are analysed and applied to model problems as well as the PDEs governing aerodynamics. LÄS MER
4. Finite Difference and Discontinuous Galerkin Methods for Wave Equations
Sammanfattning : Wave propagation problems can be modeled by partial differential equations. In this thesis, we study wave propagation in fluids and in solids, modeled by the acoustic wave equation and the elastic wave equation, respectively. LÄS MER