Essays about: "divergence free"
Showing result 1 - 5 of 16 essays containing the words divergence free.
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1. SECOND-ORDER DIVERGENCE-FREE FEM FOR MAGNETOHYDRODYNAMICS USING LAGRANGE POLYNOMIALS
University essay from Uppsala universitet/Institutionen för informationsteknologiAbstract : AbstractMaxwell’s laws state that the divergence of a magnetic field always remains zero. In thecontinuous setting this is true for the magnetohydrodynamics equations. However, in thediscrete setting, the solution does not always remain divergence-free. READ MORE
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2. Monitoring of heat exchanges in thesnowpack of Foxfonna glacier, Spitzbergen,Svalbard.
University essay from Lunds universitet/Förbränningsfysik; Lunds universitet/Fysiska institutionenAbstract : The processes of meltwater storage in firn and the impact of refreezing on firn-coveredglaciers have been investigated on the Greenland ice-sheet. On Svalbard, climate changepromotes the disappearance of firn on glaciers. READ MORE
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3. High-performance implementation of H(div)-conforming elements for incompressible flows
University essay from Uppsala universitet/Avdelningen för beräkningsvetenskapAbstract : In this thesis, evaluation of H(div)-conforming finite elements is implemented in a high-performance setting and used to solve the incompressible Navier-Stokes equation, obtaining an exactly point-wise divergence-free velocity field. In particular, the anisotropic Raviart-Thomas tensor-product polynomial space is considered, where the finite element operators are evaluated with quadrature in a matrix-free fashion using sum-factorization on tensor-product meshes. READ MORE
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4. Asynchronous Divergence-Free Smoothed Particle Hydrodynamics
University essay from Blekinge Tekniska Högskola/Institutionen för programvaruteknikAbstract : Background. Fluid simulation is an area of ongoing research. In recent years, simulators have become more realistic and stable, partly by employing the condition of having divergence-free velocity fields. A divergence-free velocity field is a strict constraint that requires a high level of correctness in a simulation. READ MORE
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5. An application of Bayesian Hidden Markov Models to explore traffic flow conditions in an urban area
University essay from Uppsala universitet/Statistiska institutionenAbstract : This study employs Bayesian Hidden Markov Models as method to explore vehicle traffic flow conditions in an urban area in Stockholm, based on sensor data from separate road positions. Inter-arrival times are used as the observed sequences. READ MORE