Sökning: "Andreas Mark"
Visar resultat 1 - 5 av 11 avhandlingar innehållade orden Andreas Mark.
1. A Novel Immersed-Boundary Method for Multiple Moving and Interacting Bodies
Sammanfattning : This thesis describes the development, implementation and validation of an implicit, second order accurate, finite-volume and instationary immersed-boundary method for simulating the detailed flow around multiple arbitrary moving and interacting bodies. The potential for flows including moving bodies or boundaries, such as multiphase flows still has to be fully realized. LÄS MER
2. The Mirroring Immersed Boundary Method - Modeling Fluids with Moving and Interacting Bodies
Sammanfattning : The detailed fluid flow around arbitrary, moving, interacting and deforming bodies is both complex and poorly understood and the commercial simulation tools simulating such flows are computationally to demanding. Hence, a new fast and accurate method for simulating complex multi-body flows is required. LÄS MER
3. Magnetic Fields and Induced Power in the Induction Heating of Aluminium Billets
Sammanfattning : Induction heating is a common industrial process used for the reheating of billets before extrusion or forging. In this work the influence of the coil and work piece geometry, the effect of the electrical properties of the work piece, and the coil current and frequency, on the magnetic flux density and resulting work piece heating rates were studied. LÄS MER
4. Business Cycles, Unemployment and Job Search : Essays in Macroeconomics and Labor Economics
Sammanfattning : This thesis consists of four essays. The first essay, "Separations, Sorting and Cyclical Unemployment", establishes a new fact about the compositional changes in the pool of unemployed over the U.S. business cycle and evaluates a number of theories that can potentially explain it. LÄS MER
5. New methods and applications to explore the dynamics of least-cost technologies in geospatial electrification modelling
Sammanfattning : Access to modern energy services is a pre-requisite for sustainable development. As such, Sustainable Development Goal (SDG) 7 aims to ensure access to affordable, reliable, sustainable and modern energy for all. However, as of 2021, 675 million people lack access to electricity, and 2.3 billion people lack access to clean cooking fuels. LÄS MER