Conditions of EM forced laminar mixing in a special glass melter

Geža, Vadims; Jakovičs, Andris; Krieger, Uwe; Halbedel, B.

doi:10.22364/mhd.46.4.14

Cited by 2 publications

(1 citation statement)

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“…Analytical solution of Stokes equation with force density in form (8) gives the same u t (r) distributions as numerical simulations (CFD code ANSYS CFX solves full Navier-Stokes equation (equation ( 4)-( 6))). Dimensionless analysis of flow in this system is analyzed in Geža et al (2010) in details. There it is shown that with existing limitations in this system it is not possible to obtain higher velocities and current parameters are close to optimal.…”

Section: Processes For Mixing Qualitymentioning

confidence: 99%

Modelling of electromagnetic heating and mixing conditions in glass melt output equipment

Geža

Jakovičs

Krieger

et al. 2011

COMPEL - The International Journal for Computation and Mathematics in Electrical and Electronic Engineering

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Purpose -The purpose of this paper is to investigate the outlet of a special glass melting system, which is used to control melt flow and modify flow pattern. Design/methodology/approach -Numerical calculations in ANSYS and ANSYS CFX were used to study electromagnetic, thermal, hydrodynamic and chemical mixing processes, results are validated by comparison with experimental data. Findings -Obtained results show that investigated approach can improve glass melt chemical homogeneity significantly -Lorentz force driven melt movement in conjunction with diffusion process ensures good mixing quality.Research limitations/implications -The mixing in glass melt is present only in azimuthal direction (in cylindrical coordinate system associated with outlet tube axis) but the radial homogenization is determined by diffusion only. Practical implications -The experiments in JSJ GmbH with soda lime glass were successful and showed mixing effect in output material, thus providing additional method for glass production. Originality/value -Although the electrical conductivity of glass is very low, the melt motion is generated by EM forces in this equipment, thus this approach is innovative in glass production technology where typical motion source is buoyancy or mechanical mixing.

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Section: Processes For Mixing Qualitymentioning

confidence: 99%

Modelling of electromagnetic heating and mixing conditions in glass melt output equipment

Geža

Jakovičs

Krieger

et al. 2011

COMPEL - The International Journal for Computation and Mathematics in Electrical and Electronic Engineering

Self Cite

View full text Add to dashboard Cite

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Statistical analysis of the influence of forces on particles in EM driven recirculated turbulent flows

Ščepanskis

Jakovičs

Baake

2011

J. Phys.: Conf. Ser.

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The present paper contains an analysis of the statistical distribution of forces affecting non-conducting particles dispersed in an EM induced recirculated flow in induction furnaces. The simulation is conducted adopting the LES-based Euler-Lagrange approach in the limit of dilute conditions (one-way coupling). It is done by means of a development of OpenFOAM software code. The used Lagrange equation for particle tracking includes drag, EM, buoyancy, lift, acceleration and added mass forces. The relevant approximations for the forces are chosen on the basis of the statistical analysis of the non-dimensional parameters (particle Reynolds number, shear stress and acceleration parameter). The effect of force distribution on particle homogenization is described under different density ratios and particle sizes. The recommendations of the consistence of the Lagrange model for the simulation of the particle motion in the laboratory scale induction crucible furnace are given in conclusion.

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Conditions of EM forced laminar mixing in a special glass melter

Cited by 2 publications

References 0 publications

Modelling of electromagnetic heating and mixing conditions in glass melt output equipment

Modelling of electromagnetic heating and mixing conditions in glass melt output equipment

Statistical analysis of the influence of forces on particles in EM driven recirculated turbulent flows

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