Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 13 of 13 for “"Flow efficiency"”.
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Chemically-bonded enamel-coated steel pipelines for corrosion protection and flow efficiency
"This study is to explore and develop chemically-bonded enamel coating (200-300 um) on steel pipes, when subjected to soil and thermal environments, in order to improve the corrosion protection and safety of hazardous liquid and natural gas pipelines while reducing pressure loss. Out of five types …
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The assessment of the effects of deposits and corrosion on flow efficiency in petroleum products pipelines for integrity management
… models have so far been developed for assessing flow efficiency in oil and gas pipelines. However, no such models for assessing flow efficiency have been developed for petroleum products pipelines. The main objectives of this study is to assess and predict the effect of deposits and corrosion on …
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The design and construction of a novel pipe flow apparatus for exploring polymer drag reduction
Turbulent flows are inherently less efficient than their laminar counterparts, and this additional dissipation results in the waste of a substantial amount of energy in any turbulent fluid system. It has long been known that the addition of a small amount of high molecular weight polymer to a …
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Turbocharger Turbines: An Experimental Study on the Effects of Wastegate Size and Flow Passage Design
… two (21 mm). The effects of turbine housing flow passage design and bypass throat size on open wastegate turbine performance and wastegate flow efficiency were examined at discrete wastegate valve openings: 5¿¿, 10¿¿, 20¿¿, and 40¿¿. The study also analyzes the effects of these geometrical …
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The dynamics and strategic analysis of wireless communications technology in the healthcare industry
… physician and nurse productivity and work flow efficiency, reduce supply chain cost, improve revenue collection and practice profitability. This report presents the dynamic and strategic analysis of wireless communications technology in the healthcare industry, by first evaluating the …
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Computational design of microvascular biomimetic materials
… as, for example, networks designed for flow efficiency are likely to have a topology that is very different from those designed for structural integrity or thermal control. In this work, we propose to design these materials using Genetic Algorithms (GAs), the most common methodology …
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A hybrid approach for intersection management in V2X-enabled connected vehicles
… transportation by enhancing safety, efficiency, and convenience. However, AVs face significant challenges in complex urban environments, particularly in accurately perceiving and navigating through intersections mainly due to occlusions. This thesis addresses these challenges by …
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Cooperative Perception in Autonomous Ground Vehicles using a Mobile Robot Testbed
… driving over a short range and improves traffic flow efficiency over a long range. This thesis proposes a methodology for cooperative perception for autonomous vehicles over a short range. The problem of cooperative perception is broken down into sub-tasks of cooperative relative localization and …
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Computational Design of Microvascular Biomimetic Materials
… emphasis is placed on the computational efficiency of the solver. Thus, a simplified formulation is used to take into account the cooling effect of the fluid, instead of solving the conjugate heat transfer problem for obtaining the temperature field in both solid and fluid domains. The …
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Optimal Resource Allocation Strategies to Protect Network-structured Systems
… which performance is assessed based on network flow efficiency and mobility. A hypothetical small-sized network is used to illustrate the developed models, and the pro- posed models are also applied to analyze a larger scale real network in order to assess their relative computational …
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Modelling of fines migration mechanisms in high permeability sands: impact on reservoir performance.
… formation impairment resulting in oil and gas inflow reductions or injectivity resistance. The problem is further enhanced in mature reservoirs where increased water ingress and multiphase production aggravate the fines mobilisation. Proper fines management can optimise productivity, injectivity, …
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Broad-band spectral analysis of a complete sample of type 1 AGN detected by INTEGRAL
… but rather a different geometry and/or accretion flow efficiency in the accretion disk. The analysis of the complete sample of type 1 AGN also allows a general picture of the average properties of this class of sources to be obtained. The mean power law slope is found to be ?=1.86±0.01, in good …
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Microscopic Modeling of Human and Automated Driving: Towards Traffic-Adaptive Cruise Control
… The first part deals with a microscopic traffic flow theory. Models describing the individual acceleration, deceleration and lane-changing behavior are formulated and the emerging collective traffic dynamics are investigated by means of numerical simulations. The models and simulation tools …