Conveners
Magnetohydrodynamics
- Imants Kaldre (Institute of Physics of the University of Latvia)
The science of magnetohydrodynamics (MHD) is an invaluable tool in modern industrial development due to the growing usage of electrical energy and environmental concerns. This talk will discuss a few examples from the metallurgical industry. The annual production of primary aluminium is about 64 million tons, nearly all via an electrochemical process consuming 848 TWh of electricity (or 3% of...
In this work there are presented experimental results from magnetohydrodynamic (MHD) flow study in a strong magnetic field up to 5T, performed on the superconducting magnet, in IPUL (Institute of Physics of the University of Latvia). The aim of this experiment is to evaluate the performance of electrical insulation introduced in the PbLi duct by use of SiC flow channel inserts. They are...
In this study thermal decomposition and combustion processes of microwave pre-treated straw pellets are modeled using COMSOL Multiphysics numerical software. 2D axi-symmetric geometry of the combustion reactor is considered and a turbulent, reacting flow is modeled in a steady-state conditions. It is found found that the microwave pre-treatment of biomass significantly influences overall heat...
Most aluminum degassing methods rely on inert gas bubbles to carry and remove excess dissolved hydrogen. In this work, we focus on bubble dispersion by metal flow, more specifically an electromagnetically flow created by rotating permanent magnets. Here the conditions for bubble dispersions are defined and necessary flow characteristics are calculated by numerical modelling. Experimentally...
In this research COMSOL multiphysics 5.3 numerical modelling software is used. A mathematical model based on a real induction coil is created. When an induction coil like in the Institute of Physics of the University of Latvia is created, various physics modules are sequentially added: magnetic field, electromagnetic induction, thermal problem, external fields. This is done sequentially such...
Lai iegūtu vienmērīgu kausējuma termisko sadalījumu, piemēram, alumīnija krāsnis, sajaukšanu var nodrošināt ar rotējošiem pastāvīgiem magnētiem. Rotējošais pastāvīgais magnēts ģenerē rotējošu magnētisko lauku, kas inducē tilpuma spēku tuvumā esošajā šķidrajā metālā. Šajā publikācijā ir apkopots eksperimentāls un skaitlisks pētījums par temperatūras izlīdzināšanu ar pastāvīgo magnētu šķidra...
