Essays about: "Direct Numerical Simulation"
Showing result 1 - 5 of 30 essays containing the words Direct Numerical Simulation.
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1. On intermittency in the turbulent asymptotic suction boundary layer
University essay from KTH/Skolan för teknikvetenskap (SCI)Abstract : This thesis presents a series of direct numerical simulations (DNS) performed in order to understand the discrepancy in the literature regarding turbulent asymptotic suction boundary layers (TASBLs) at low Reynolds numbers. The hypothesis to be tested is that the main reason for higher turbulence intensities observed in experiments compared to DNS is that the latter exhibits intermittent patches of laminar flow, developing both temporally and spatially. READ MORE
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2. Thermal and flow field validation of lattice Boltzmann method solver
University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematikAbstract : Computational fluid dynamics, abbreviated CFD, is a valuable tool for several engineering applications. Applications such as heating, cooling or drying are some examples of areas where CFD is used. READ MORE
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3. Investigation of charge injection at electrode-dielectric interface relevant for HVDC cables : Simulation of charge injection and transport dynamics in electrical insulation for HVDC cables
University essay from Uppsala universitet/Tillämpad mekanikAbstract : A bipolar charge transport (BCT) model is used to simulate charge injection and transportdynamics inside insulation material which are used in a high voltage direct current (HVDC)cable. Gaining knowledge about space charge density and electric field distribution in theinsulation material enables minimising charge injection at the metal-insulator interface andavoiding unnecessary energy loss. READ MORE
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4. Finite Element Modeling of Installation Effects of Soil-Cement Columns
University essay from Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurserAbstract : Since the 1970's deep mixing columns have been widely used all over the world to improve the performance of soft soil in regard to bearing capacity or deformation behaviour. They are installed by mixing a binding agent, e.g. cement, in situ with the soil. READ MORE
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5. Kalman-Filter Design and Evaluation for PMSM Rotor-Temperature Estimation
University essay from Lunds universitet/Institutionen för reglerteknikAbstract : The permanent magnet synchronous motor, PMSM, is an efficient electrical motor that has seen a greater prevalence in the automotive industry from the increasing demand for electrical vehicles. Managing the temperature of the permanent magnet rotor is important to optimize motor utilization and avoid hardware failures. READ MORE