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 20 of 61 for “"Continuous Casting"”.
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Modeling the continuous casting of steel
… to compute the thermo-mechanical state of continuously cast steels in the casting mold. The model includes the mold in the analysis so that it fully accounts for the effects of mold distortion on the gap formed between the mold and the solidifying strand. It is solved iteratively so that …
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Liquid metal flows in continuous casting molds
Der Effekt eines externen Magnetfeldes auf die mehrphasige und turbulente Strömung in Stranggußkokillen und deren Wechelspiel führt in den wissenschaftlichen Arbeiten zu widersprüchlichen Aussagen. Die verschiedenen Prozessparameter können innerhalb eines kleinen Varianzbereichs entscheidenden …
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Multiphysics modeling of the steel continuous casting process
… develops a macroscale, multiphysics model of the continuous casting of steel. The complete model accounts for the turbulent flow and nonuniform distribution of superheat in the molten steel, the elastic-viscoplastic thermal shrinkage of the solidifying shell, the heat transfer through the …
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Inclusion behaviour in the liquid core during continuous casting.
… patterns developed in the sump of a steel continuous casting machine and the influences these have on the behaviour of inclusions. An experimental method has been devised to simulate the behaviour of inclusions in the sump and to study the apportionment of the input flux of inclusions …
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Shape distortion and air gap formation during continuous casting.
… in the thin shell of steel solidifying in a continuously casting mould, to the shape distortion and the formation of an air gap. The work postulates that the behaviour of this shell can be analysed as that of a flexible structure formed by four elasto-perfectly plastic beams linked by rigid …
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Model studies of plasma heating in the continuous casting tundish.
… systems operated by some of the more modem continuous casting plants. Similarity between steam heating in the water model and plasma heating in the tundish has been established. A dimensionless criterion was developed to validate the simulation experiments and its represented by the plasma …
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Thermo-Mechanical Behavior During Steel Continuous Casting in Funnel Molds
… 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 plant measurements from the Corus Direct Sheet Plant in IJmuiden, The …
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Modeling of multiphase turbulent flow in continuous casting of steel
… multiphase flow issues arising in the continuous casting process of steel through the application of the developed models. In the continuous casting of steel, argon gas injection at Upper Tundish Nozzle (UTN) wall or stopper tip is well known to decrease clogging and remove inclusions. …
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Modelling of the liquid slag behaviour in the continuous casting mould
This work presents a fluid dynamics model of a continuous caster mould region, including the transient behaviour of the steel/slag interface. The research was carried out in collaboration with ArcelorMittal Research (AMR), based in Maizieres-les-Metz in France. The industrial objective of the …
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Three-dimensional mathematical modeling of the thin slab continuous casting process
… to compute the 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 …
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User-friendly interface design and development for continuous-casting model CON1D
… run simulations, and graph the outputs from the continuous casting model CON1D was designed and implemented in a spreadsheet environment, with a focus on including features to expand the usability and audience of the model. CON1D is a very powerful and efficient 1-D transient computational model …
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Control of constrained moving-boundary process with application to steel continuous casting
Continuous casting is an important engineering process producing nearly all steel currently used worldwide. Regulation of the steel temperature through the water spraying during casting critically affects the final product quality as well as operational safety. Most of the cooling spray control …
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Modeling transient multiphase flow and mold top surface behavior in steel continuous casting
… mold region and mold top surface behavior during continuous casting of steel slabs. Each model can be used independently or combined together as a comprehensive system to gain insights into the inter-related multiphase fluid dynamics in the caster mold during both quasi-steady-state and …
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An expert system to diagnose quality problems in the continuous casting of steel billets
… rhomboidity and breakouts are often observed in continuously cast steel billets. Although information is available in the literature on the causes of, and solutions to, these problems, the transfer of this knowledge to operating personnel is not always an easy task. To address this issue, an …
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Transient Study of Turbulent Flow and Particle Transport During Continuous Casting of Steel Slabs
… motion and capture of impurity particles during continuous casting were simulated using a Lagrangian approach. A criterion was developed to model particle pushing and capture by the solidifying shell and was incorporated into the particle transport model. The criterion was validated by …
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Efficient Thermo-Mechanical Model for Solidification Processes and Its Applications in Steel Continuous Casting
… against the CON2D 2D model of billet casting by fully employing Abaqus thermal and mechanical contact capabilities. Another coupled 2D model of bloom beam blank casting, known for a very challenging geometry, is solved for the simultaneous evolution of deformation, temperature, and …
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Argon Bubble Behavior in Slide-Gate Tundish Nozzles During Continuous Casting of Steel Slabs
… employed method to reduce nozzle clogging in the continuous casting process. It also affects casting operation and product quality by changing the flow pattern in the nozzle and mold. The current work combines mathematical modeling and experiments to investigate the argon bubble behavior in …
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Transient thermo-fluid model of meniscus behavior and slag consumption in steel continuous casting
… of immense importance for the surface quality of continuous-cast steel. A computational model of the meniscus region has been developed, that includes transient heat transfer, multi-phase fluid flow, solidification of the slag, and movement of the mold during an oscillation cycle. First, the model …
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Studies of turbulent flows in continuous casting of steel with and without magnetic field
… well as in the nozzle and mold geometries of the continuous casting process. The direct numerical simulations are first performed in channel, square and 2:1 aspect rectangular ducts to investigate the effect of magnetic field on turbulent flows. The rectangular duct is a more practical geometry …
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