A5020845138- Metallurgical Processes and Thermodynamics
- Fluid Dynamics and Mixing
- Solidification and crystal growth phenomena
- Minerals Flotation and Separation Techniques
- Aluminum Alloy Microstructure Properties
- Metallurgy and Material Forming
- Innovative Microfluidic and Catalytic Techniques Innovation
- Biosensors and Analytical Detection
- Manufacturing Process and Optimization
- Vacuum and Plasma Arcs
- Engineering and Environmental Studies
- Metal Alloys Wear and Properties
- Cyclone Separators and Fluid Dynamics
- Enhanced Oil Recovery Techniques
- Physics and Engineering Research Articles
- Particle Dynamics in Fluid Flows
- Fluid Dynamics and Heat Transfer
- Molten salt chemistry and electrochemical processes
- Advanced Neural Network Applications
- Advanced materials and composites
RWTH Aachen University
2015-2024
In ladle metallurgy, the flow of purge gas through injectors promotes an effective mixing melt concerning composition and energy. this work, different types injectors, positioned eccentrically at 66% radius are investigated in terms bubble size distribution, resultant field velocity, turbulent kinetic The experiments carried out a 1:3 scale water model 185 t using Particle Image Velocimetry (PIV) image processing. It is shown that porous plug provides more intensive bulk convection higher...
Interaction between multiple phases especially liquid-gas is one of the most common phenomena in industrial systems. Computer Vision enables modern systems to derive an automated and robust image-processing technique address this issue. However, diverse experimental conditions still make it a challenging task overcome. In Deep Learning, instance segmentation has created niche various computer vision applications as aims provide different IDs objects belonging same class. paper, we propose...
Mixing time is a common measure to evaluate the efficiency of homogenization in ladle metallurgy. In this study, 1:3 scale water model 185 t industrial gas-stirred with an eccentric porous plug at bottom used study impact different injector designs on mixing constant flow rate 16.7 slm (standard liter per minute) pressure 2 bar and filling height 1.076 m. For that, measured continuous food color injection, accompanied by Particle Image Velocimetry (PIV) correlate results bulk convection...
The Electroslag Remelting (ESR) process concerns the use of a consumable metal electrode, which is used to melt through slag layer into water-cooled mold by applying an alternating electric current. ESR produces large ingots high quality. This achieved controlled solidification and chemical refinement. An understanding solidification, heat fluid flow in essential order predict presence defects solidified ingot. Due transient nature multiphase, non-isothermal problem with magneto-hydrodynamic...
Abstract To account for increasing economic and ecological pressure, the steel industry is obligated to continuously optimize all processes. An important optimization approach numerical modeling although its potential limited by accuracy of mathematical models. In a previous work, validation database was created score derived from this data which allows comprehensive qualitative assessment those Here, system employed systematic isothermal flow in casting ladle. For that, different submodels,...
Abstract In numerical computation of ladle metallurgy, multiphase models are essential. Still, these afflicted with great uncertainty, making a validation experimental data mandatory. Validation experiments fundamentally differ from physical modeling because emphasis is on complete documentation all boundary conditions and detailed uncertainty assessment. For this work, the design for comprehensive accuracy assessment reported quantities were jointly determined international experts. The...
Improving the overall energy efficiency of processes is necessary to reduce costs, lower specific consumption and thereby direct or indirect emission gases that contribute climate change. In many metallurgical processes, a large amount lost with off-gas. recycling off-gas often can be used preheat to-be-recycled metal scrap, leading significantly higher efficiency. However, application preheating has disadvantage it requires more precise planning in design better control process. this paper,...
Problems associated with top‐blowing are present in most steel plants. While it promotes high reaction rates, can cause loss of yield, working hazards, and increased maintenance cost by spitting, skulling, or lid sticking. Although the basic physics splashing phenomenon have already been established, earlier studies not addressed velocities droplets. Furthermore, existing information on size impingement angle droplets is based indirect measurements. Herein, a direct measurement method for...
Abstract The interest in ultra-pure metals is steadily growing due to the increasing demand for these materials modern technology. To be able meet future, it necessary implement more efficient and productive processes. As a fractional crystallization method this application area, cooled finger exhibits higher productivity lower energy requirements when compared industry well-established methods like zone melting. In study, mechanisms relevant phenomena crucial successful implementation of...
Electroslag remelting (ESR) is a well‐known process widely used in the production chain of high‐quality alloys. Herein, numerical investigations implementation rotating‐electrode (low rotation speed) modification to flow behavior inside slag area lab‐sized ESR are shown. Therefore, coupled simulation approach between commercial CFD (FVM) and electromagnetics (FEM) software used. Comparative results for simulated droplet formation stationary rotating electrode The show strong effect on local...
Numerical simulation is a vital tool for the continuous improvement of all steelmaking processes. In previous works, authors have dedicated different approaches to optimize modeling fluid flow in ladle. This includes sensitivity analysis validation techniques, assembling database, and model optimization on water scale. Herein, final part this project presented at which optimized scaled real process. Associated problems are identified solutions proposed. To achieve tradeoff between large eddy...