Essays about: "disc"
Showing result 1 - 5 of 252 essays containing the word disc.
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1. Measuring copper abundances in the Galactic Bulge
University essay from Lunds universitet/Astrofysik; Lunds universitet/Fysiska institutionenAbstract : Context: The chemical evolution of Cu in the Galactic bulge have been studied in a few studies using red giant branch stars, but the ages of individual red giant stars are difficult to determine. In addition, the bulge has been a challenging region of the Milky Way galaxy to obtain high-resolution spectra of stars, except when observing through certain few small fields into the bulge that are known to have low extinction. READ MORE
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2. Impact of Frame Stiffness on Tribological Behaviour of Sliding Interfaces
University essay from KTH/Skolan för industriell teknik och management (ITM)Abstract : Friction and wear have been concerns to industrialists, scientists and environmentalist for several decades. Many robust models have been developed to address friction and wear and their dependency on various parameters. Numerous experiments have been conducted in the past to model friction and wear. READ MORE
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3. High Temperature Tribology of Exhaust Components in Alternative Fuel Engines
University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematikAbstract : Internal Combustion Engine (ICE) exhaust components are exposed to extreme operating temperatures. Thus, it is necessary that they are designed with materials that can sustain thermal and vibrational stresses. READ MORE
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4. Adjoint-based Formulation for Shape Optimization Problems in Computational Fluid Dynamics
University essay from KTH/Matematik (Avd.)Abstract : A continuous adjoint formulation for exterior optimization of Dirichlet data on the boundary for potential flow applications has been developed in this thesis. This has been performed by utilizing boundary integral methods for both the primal problem (Laplace’s equation) and for the corresponding adjoint equation (Poisson’s equation) on the unit disc. READ MORE
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5. Experiments and simulations of gas flow through a NiCd battery
University essay from KTH/Skolan för industriell teknik och management (ITM)Abstract : This report describes the thesis work carried out regarding experiments and simulations of the gas flow through a NiCd battery. The objective of the work was to investigate how different geometries of the flip top vent on the battery and the level of porosity of the flame arresting disc impacted the amount of potassium carbonate created at the outlet of the vent. READ MORE