scholarly journals Measurements of the distribution of the magnetic field on a metal and the power density in induction heating.

1985 ◽  
Vol 105 (9) ◽  
pp. 755-762
Author(s):  
Kazuhisa Ishibashi
Keyword(s):  
Magnetic Field ◽  
Power Density ◽  
Induction Heating ◽  
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.

scholarly journals Design Development and Analysis of a Partially Superconducting Axial Flux Motor Using YBCO Bulks

Materials ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4295
Author(s):  
Brahim Chelarem Douma ◽  
Bilal Abderezzak ◽  
Elhadj Ailam ◽  
Raluca-Andreea Felseghi ◽  
Constantin Filote ◽  
...  
Keyword(s):  
Magnetic Field ◽  
High Temperature ◽  
Low Temperature ◽  
Magnetic Flux ◽  
Power Density ◽  
Theoretical Study ◽  
Design Development ◽  
Axial Flux ◽  
Flux Concentration ◽  
The Magnetic Field

In this work, authors have designed, constructed and tested a new kind of partially superconducting axial flux machine. This model is based on the magnetic flux concentration principle. The magnetic field creation part consists of the NbTi superconducting solenoid and two YBaCuO plates. A theoretical study is conducted of an extrapolated superconducting inductor for low-temperature superconducting and high-temperature superconducting solenoids. The optimization of the inductor is carried out in order to increase the torque and the power density as well. This improvement is done by changing the shape of the elements which form the superconducting inductor. Finally, a prototype is realized, and tested.

scholarly journals THE INFLUENCE OF NEAR INFRARED STIMULATION ON THE GERMINATION ENERGY AND GERMINATION CAPACITY OF SELECTED PARSLEY VARIETIES

2018 ◽  
Vol 78 ◽  
pp. 23-36
Author(s):  
Katarzyna Niemczyk ◽  
Barbara Kmiecik ◽  
Jerzy Detyna ◽  
Henryk Bujak
Keyword(s):  
Magnetic Field ◽  
Radiation Dose ◽  
Power Density ◽  
Growth And Development ◽  
Near Infrared ◽  
Germination Capacity ◽  
Physical Methods ◽  
Positive Effect ◽  
The Magnetic Field

A variety of different physical methods are used increasingly frequently to improve the quality of theseeds material. Numerous publications confirm the positive effect of, for example, the magnetic field witha frequency of 50 Hz on the germination of seeds. However, there are no significant reports regarding theimpact of NIR radiation on the growth and development of plants. To fill this gap the influence of three dosesof near-infrared seeds stimulation was tested under laboratory conditions. The power density was 6.9mW/cm2. The used seeds encompassed four parsley varieties: Konika, Osborne, Alba and Hanácká. Both the influenceof the used variety as well as the radiation dose on parsley germination were tested. The obtained resultsindicate that the stimulation affects the selected parsley varieties.

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.

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