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 17 of 17 for “"Thin slab"”.
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Three-dimensional mathematical modeling of the thin slab continuous casting process
… thermomechanical state in the casting mold of thin slab continuous casters. The mold consists of two broad side walls and two narrow side walls all of which are water cooled. The upper portion of the broad side walls extend apart from each other so that a funnel-shaped chamber is defined. This …
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Correlation for measured mold heat flux and CON1D simulations for feasible operating conditions in thin-slab continuous casting
… essential for the production of high quality slabs in a safe environment. Cooling in steel continuous casting comprises primary cooling in mold followed by secondary cooling in spray cooling zone. In this work, various parameters affecting heat flux are studied, first in mold from plant …
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Transient Study of Turbulent Flow and Particle Transport During Continuous Casting of Steel Slabs
… the motion and capture of slag particles in a thin-slab steel caster. The magnitudes of the steady and unsteady forces acting on the particles. The simulations found that only about 8% of the small particles (10 and 40 microns) were safely removed by the top surface slag layer. However, a …
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Efficient Thermo-Mechanical Model for Solidification Processes and Its Applications in Steel Continuous Casting
… Finally, a large scale 3D simulation of a thin slab caster with a funnel, first of that kind ever conducted, is performed to correctly reproduce the 3D mechanical state in casting process with extremely complex geometry and loading conditions.
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Tunable emission from two-dimensional semiconductor with platelet optical antennas
… weak light-matter interaction in this atomically thin slab leads to low absorbance (- 3%) and quantum yield (~ 10-3). Although the quantum yield of monolayer MoS2 is higher compared with its few-layer counterparts, it is still significantly lower than that would be expected for a direct-gap …
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Distributed parameter control of heat diffusion with solidification
… real-time even at the high casting speeds of a thin-slab steel caster. The model is calibrated through steady state measurements of the thin-slab caster from reliable pyrometer measurements outside the spray zone and metallurgical length detection trials. The use of independent 1-D models is …
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Modernized Approach For Generating Micro-Layering And Macro-Heterogeneous Structures In Porous Media For Use In Transmitted-Light Method Flow Visualization Experiments
… reverse graded, layered (stratified) thin-slab sand chambers for visualizing multiphase flow through porous media. Reverse-graded stratification of sand chambers mimic many naturally occurring sedimentary deposits. Sand-filled cells use light as nonintrusive tools for measuring water …
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Study of space-time evolution of flux in a long-life traveling wave reactor
… in the core are further divided into finer thin slab-like regions called cells. Results presented in this thesis show the propagation of flux profile from the enriched region to the non-enriched region at a near constant speed. This shift in the flux profile is due to the continuous breeding …
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Hot ductility and its relationship to transverse cracking in steels
… continuous casting to that pertaining to thin slab casting, results in worse ductility. This can be ascribed to finer precipitation and/or a finer inclusion distribution at the y grain boundaries.A model was devised for predicting the hot ductility curve for simple plain C-Mn steels. …
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THz polaritonics : control, confinement, and strong light-matter interactions
… resolution while they are confined to a thin slab of lithium niobate (LN) or lithium tantalate (LT) that is roughly 30-100 pm thick. Polaritonics is an attractive platform for wave-based computing because of its wealth of capabilities, but still requires the study and development of some …
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THz polaritonics : optical THz generation, detection, and control on a chip
… waves are generated directly in a thin slab of lithium niobate crystal where they can be amplified and guided. Time-resolved phase-sensitive imaging lets us capture movies of THz waves as they propagate at the light-like speeds. I developed polaritonics methodologies and used the …
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A study of the plasmaspheric electron content using satellites of the global positioning system
… extends over a great height range, an infinitely thin slab at the plasmapheric effective height must be assumed in order to convert oblique to zenithal observations. Furthermore, each satellite has a hardware delay, or bias, giving uncertainty in the baseline of the derived electron content. The …
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Control of constrained moving-boundary process with application to steel continuous casting
… through the steady-state measurements of the thin-slab caster from reliable pyrometer measurements outside the spray zone as well as the metallurgical length detection trials and verified by comparing model predictions with the transient measurements of the roll forces. In the second part, the …
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Developments and applications of THz polaritonics, efficient THz generation, and single-shot THz detection
… two primary terahertz platforms that are used within the Nelson group: terahertz polaritonics and free space high field terahertz spectroscopy. The terahertz polaritonics platform consists of a thin slab of electro-optic material in which terahertz frequency radiation is generated, manipulated, …
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The binary system containing the pulsar PSR 1913+16 and ultra-violet and x-radiation from accreting magnetic white dwarfs
… post-shock region by a uniform, geometrically thin slab and determine the physical conditions behind the shock and the emitted spectrum for a range of stellar masses, magnetic fields and accretion rates. At low magnetic fields and high accretion rates, bremsstrahlung is the dominant cooling …
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Thermo-Mechanical Behavior During Steel Continuous Casting in Funnel Molds
Computational models have been developed to investigate the thermal and mechanical behavior of the solidifying steel shell in continuous casting funnel molds, with the goal of understanding the effect of funnel shape on the solidifying steel shell. The numerical models have been calibrated with …