Sökning: "Boundary conditions"
Visar resultat 6 - 10 av 860 avhandlingar innehållade orden Boundary conditions.
6. Wave Splitting and Effective Boundary Conditions for Structural Elements
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
7. High-order finite difference approximations for hyperbolic problems : multiple penalties and non-reflecting boundary conditions
Sammanfattning : In this thesis, we use finite difference operators with the Summation-By-Partsproperty (SBP) and a weak boundary treatment, known as SimultaneousApproximation Terms (SAT), to construct high-order accurate numerical schemes.The SBP property and the SAT’s makes the schemes provably stable. LÄS MER
8. Understanding Boundary Conditions for Brain Injury Prediction : Finite Element Analysis of Vulnerable Road Users
Sammanfattning : Vulnerable road users (VRUs) are overrepresented in the statistics on severe and deadly injuries in traffic accidents, most commonly involving the head. The finite element (FE) method presents the possibility to model complex interactions between the human body and vehicles in order to better understand the injury mechanisms. LÄS MER
9. Artificial Boundary Conditions for the Navier–Stokes Equations
Sammanfattning : .... LÄS MER
10. Initial-Boundary-Value Problems for the Stokes and Navier–Stokes Equations on Staggered Grids
Sammanfattning : In the first part of the thesis various types of boundary conditions for the steady state Stokes equations are considered. We formulate the boundary conditions in a new way, such that the boundary value problem becomes non-singular, and derive estimates of the solution. LÄS MER