Influence of Dual-Channel Induction Heating Coil Parameters on the Magnetic Field and Macroscopic Transport Behavior in T-Type Tundish

2021 ◽  
Author(s):  
Pu Wang ◽  
Hong Xiao ◽  
Xi-qing Chen ◽  
Xiao-song Li ◽  
Hao He ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Induction Heating ◽  
Heating Coil ◽  
Transport Behavior ◽  
Dual Channel ◽  
The Magnetic Field

scholarly journals Numerical simulation of induction heating thick-walled tubes

2018 ◽  
Vol 168 ◽  
pp. 02004
Author(s):  
Richard Lenhard ◽  
Milan Malcho ◽  
Katarína Kaduchová
Keyword(s):  
Magnetic Field ◽  
Numerical Simulation ◽  
Field Distribution ◽  
Induction Heating ◽  
Electromagnetic Induction ◽  
Magnetic Field Distribution ◽  
The Magnetic Field ◽  
Heated Material ◽  
Ansys Workbench

In the paper is shown the connection of two toolboxes in an Ansys Workbench solution for induction heating. In Ansys Workbench, Maxwell electromagnetism programs and Fluent have been linked. In Maxwell, a simulation of electromagnetic induction was performed, where data on the magnetic field distribution in the heated material was obtained and then transformed into the Fluent program in which the induction heating simulation was performed.

scholarly journals Magnetic-Field Immunity Examination and Evaluation of Transcutaneous Energy-Transmission System for a Totally Implantable Artificial Heart

2012 ◽  
Vol 2012 ◽  
pp. 1-5 ◽  
Author(s):  
Takahiko Yamamoto ◽  
Kohji Koshiji
Keyword(s):  
Magnetic Field ◽  
Magnetic Flux ◽  
Induction Heating ◽  
Artificial Heart ◽  
Noninvasive Method ◽  
Energy Transmission ◽  
Tet System ◽  
Transcutaneous Energy Transmission ◽  
Heart Induction ◽  
The Magnetic Field

Transcutaneous energy transmission (TET) is the most promising noninvasive method for supplying driving energy to a totally implantable artificial heart. Induction-heating (IH) cookers generate a magnetic flux, and if a cooker is operated near a transcutaneous transformer, the magnetic flux generated will link with its external and internal coils. This will affect the performance of the TET and the artificial heart system. In this paper, we present the design and development of a coil to be used for a magnetic immunity test, and we detail the investigation of the magnetic immunity of a transcutaneous transformer. The experimental coil, with five turns like a solenoid, was able to generate a uniform magnetic field in the necessary bandwidth. A magnetic-field immunity examination of the TET system was performed using this coil, and the system was confirmed to have sufficient immunity to the magnetic field generated as a result of the conventional operation of induction-heating cooker.

NUMERICAL MODELING OF INDUCTION HEATING FOR TWO-DIMENSIONAL GEOMETRIES

1993 ◽  
Vol 03 (06) ◽  
pp. 805-822 ◽  
Author(s):  
S. CLAIN ◽  
J. RAPPAZ ◽  
M. SWIERKOSZ ◽  
R. TOUZANI
Keyword(s):  
Magnetic Field ◽  
Mathematical Model ◽  
Numerical Method ◽  
Induction Heating ◽  
Two Dimensional ◽  
Time Periodicity ◽  
Model Equations ◽  
Thermal Phenomena ◽  
The Magnetic Field ◽  
Different Time Scales

We present both a mathematical model and a numerical method for simulating induction heating processes. The geometry of the conductors is cylindrical and the magnetic field is assumed to be parallel to the invariance axis. The model equations have current tension as prescribed data rather than current intensity. In particular, the formulation of the electromagnetic problem uses the magnetic field as the unknown function. The numerical method takes into account the time periodicity of the prescribed tension and deals with the two different time scales of electromagnetic and thermal phenomena.

A QUASI-STATIC TWO-DIMENSIONAL INDUCTION HEATING PROBLEM I: MODELLING AND ANALYSIS

1998 ◽  
Vol 08 (06) ◽  
pp. 1003-1021 ◽  
Author(s):  
C. PARIETTI ◽  
J. RAPPAZ
Keyword(s):  
Magnetic Field ◽  
Electromagnetic Field ◽  
Induction Heating ◽  
System Modelling ◽  
Two Dimensional ◽  
Joule Effect ◽  
Nonlinear Elliptic ◽  
Uniqueness Of The Solution ◽  
The Magnetic Field ◽  
Temperature Equation

We consider a nonlinear elliptic–parabolic system modelling induction heating processes when a sinusoidal electromagnetic field is applied at the boundary of the inductor. The magnetic field satisfies an elliptic equation whereas the temperature equation is parabolic. These equations are coupled together due to the conductivities and the Joule effect. We show the existence of a weak solution to the corresponding problem and under additional assumptions, we study the uniqueness of the solution.

scholarly journals Experimental Research of Induction Heating in Inner Hollow of Cylindrical Solenoid

2020 ◽  
Vol 5 (8) ◽  
pp. 986-989
Author(s):  
Viktoriia Strelnikova
Keyword(s):  
Magnetic Field ◽  
Field Strength ◽  
Magnetic Field Strength ◽  
Induction Heating ◽  
Problem Solution ◽  
Sudden Increase ◽  
Electrodynamic Problem ◽  
Induced Currents ◽  
Analytical Relations ◽  
The Magnetic Field

Purpose. Experimental determination of the dependence of the magnetic field strength distributions and the density of induced currents in the metal of the tubular blank from its position in the cylindrical inductor internal hallow. Methodology. The electrodynamic problem solution using mathematical apparatus for analytical calculations. To describe the processes that arise in the material under processing, expressions for fields and currents flowing in non-magnetic metals under the action of a multi-turn cylindrical solenoid that derived from the system of Maxwell's equations. Accepted mathematical assumptions and simplifications do not affect the correctness of the results. Carrying out an experiment to determine the intensity of the magnetic field in the solenoid inner hollow and the induced currents density on the surface of the nonmagnetic blank. Results. The obtained experimental distributions of the magnetic field strength and induced currents with the full blank placement in the cylindrical inductor hollow correspond to the analytical relations derived earlier and coincide with the fundamental physical concepts of the processes taking place in the system. When the billet is partially placed in the inner hollow of the inductor, there is a sudden increase in the tangential magnetic field strength component. In this case, an extremum is observed in the end zone of the billet. This is explained by the concentration of induced currents in this region, as well as on the cylindrical surface of the billet. Originality. The average induction heating speeds correspond to the calculated values for the materials of the processed samples used in the experiment, which indicates the effectiveness of using this processing technology in equal measure, both non-magnetic metals and magnetic. The practical value of the results consists in the possibility of estimating the qualitative indices of the concentration of induced currents and heat release in the end part of nonmagnetic cylindrical preforms with their partial overlapping by an inductor to perform heating operations.

A QUASI-STATIC TWO-DIMENSIONAL INDUCTION HEATING PROBLEM II: NUMERICAL ANALYSIS

1999 ◽  
Vol 09 (09) ◽  
pp. 1333-1350 ◽  
Author(s):  
C. PARIETTI ◽  
J. RAPPAZ
Keyword(s):  
Magnetic Field ◽  
Electromagnetic Field ◽  
Numerical Analysis ◽  
Elliptic Equation ◽  
Induction Heating ◽  
Two Dimensional ◽  
Joule Effect ◽  
Nonlinear Elliptic ◽  
The Magnetic Field ◽  
Temperature Equation

We consider a nonlinear elliptic–parabolic system which stems from the modelling of heat induction processes in which a sinusoidal electromagnetic field is applied at the boundary of the inductor. The magnetic field satisfies an elliptic equation whereas the temperature equation is parabolic. These two equations are coupled due to the Joule effect and to the conductivity dependence on temperature. A Galerkin method for our problem is analyzed and shown to yield error estimates in L2 and H1.

Observing the galactic magnetic field

1967 ◽  
Vol 31 ◽  
pp. 375-380
Author(s):  
H. C. van de Hulst
Keyword(s):  
Magnetic Field ◽  
Fair Agreement ◽  
Solar Neighbourhood ◽  
Galactic Magnetic Field ◽  
The Magnetic Field

Various methods of observing the galactic magnetic field are reviewed, and their results summarized. There is fair agreement about the direction of the magnetic field in the solar neighbourhood:l= 50° to 80°; the strength of the field in the disk is of the order of 10-5gauss.

Evolution of Large-Scale Coronal Structures

1994 ◽  
Vol 144 ◽  
pp. 29-33
Author(s):  
P. Ambrož
Keyword(s):  
Magnetic Field ◽  
Field Line ◽  
Large Scale ◽  
Coronal Magnetic Field ◽  
Source Surface ◽  
Solar Cycles ◽  
Characteristic Relationship ◽  
The Magnetic Field ◽  
Coronal Structures

AbstractThe large-scale coronal structures observed during the sporadically visible solar eclipses were compared with the numerically extrapolated field-line structures of coronal magnetic field. A characteristic relationship between the observed structures of coronal plasma and the magnetic field line configurations was determined. The long-term evolution of large scale coronal structures inferred from photospheric magnetic observations in the course of 11- and 22-year solar cycles is described.Some known parameters, such as the source surface radius, or coronal rotation rate are discussed and actually interpreted. A relation between the large-scale photospheric magnetic field evolution and the coronal structure rearrangement is demonstrated.

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