Two-phase flow simulation for distinguishing deformable particles with a LiMCA system
| Autor: | Xiaodong Wang, Runcong Liu, Xiaokang Guo, Mihaiela Isac, Roderick I. L. Guthrie, Zheyan Zhang |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Liquid metal
Materials science Applied Mathematics Multiphysics Reynolds number chemistry.chemical_element 02 engineering and technology Mechanics Deformation (meteorology) 01 natural sciences Capillary number symbols.namesake 020303 mechanical engineering & transports 0203 mechanical engineering chemistry Aluminium Modeling and Simulation 0103 physical sciences symbols Particle Two-phase flow 010301 acoustics |
| Zdroj: | Applied Mathematical Modelling. 88:106-121 |
| ISSN: | 0307-904X |
| Popis: | In the metallurgical industry, Liquid Metal Cleanliness Analyser (LiMCA) commercial equipment cannot distinguish between hard particles (e.g., oxides, borides) and deformable particles (e.g., bubbles, molten salts). Therefore, hard particle concentrations can sometimes be grossly overestimated, which reduces the measurement accuracy. However, the method could potentially discriminate between deformable particles and hard particles by evaluating the particle's ability to deform. In this work, the coupled multiphysics problem of a particle deforming within current-carrying aluminium metal passing through the electric sensing zone (ESZ) is simulated using the conservative level-set (CLS) method. An emphasis is placed on understanding the transient deformation history, and the effect of the capillary number, Reynolds number, and confinement ratio on deformation are studied. Furthermore, a computational basis is given to estimate the influence of particle deformation on electrical resistance pulses (ERP). It is found that ERP features of deformation particles, including the peak magnitude and the pulse width, are different from those of hard particles. Based on the results, the effect of a particle's deformation and the feasibility to discriminate it from non-deformable particles in the LiMCA system is evaluated. |
| Databáze: | OpenAIRE |
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