State of the art of numerical modeling for induction processes

Lavers, J.D.

doi:10.1108/03321640810847625

Cited by 20 publications

(6 citation statements)

References 118 publications

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“…It should be mentioned that to develop solutions for induction heating, a number of engineering and IT tools are often used, mainly focused on numerical modeling of the heating process [31][32][33]. By using FEM-based computing packages and other tools based on a virtual experiment, it is possible with high accuracy and in a very short time to develop and verify the developed solutions and concepts [34][35][36].…”

Section: Introductionmentioning

confidence: 99%

Development of Induction Heating System Ensuring Increased Heating Efficiency of the Charge Material in a Forging

Hawryluk

Rychlik²,

Pietrzak

et al. 2022

Materials

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This study performs a complex analysis and review of the currently applied methods of inductively heating the charge material in hot die forging processes, as well as elaborates and verifies a more effective heating method. On this basis, a device for inductive heating using variable frequency inductors was designed and constructed, which made it possible to reduce the scale and decarburization with respect to the heater used so far. In the first place, the temperature distributions in the heater in the function of time were modeled with the use of the CEDRAT FLUX software. The aim of the research was to analyze the temperature gradient and value diversification on the surface and in the material core, as well as to determine the process stability. The following stage was designing and constructing a heater with an automatic system of loading and positioning of the charge on the exit, as well as with a possibility of working in a fully automated system adjusted to the work center. The last stage of investigations was the verification of the elaborated effective heating method on the basis of a short production series and a continuous work for the period of 8 h, both in the quantitative and qualitative aspect (reduced oxidation and decarburization as well as a gradient between the core and the surface). The obtained results confirm the effectiveness of the proposed solution referring to heating the charge material, especially in the aspect of stability and repeatability of the process, as well as a significant reduction in oxidation and decarburization of the material surface.

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Section: Introductionmentioning

confidence: 99%

Development of Induction Heating System Ensuring Increased Heating Efficiency of the Charge Material in a Forging

Hawryluk

Rychlik²,

Pietrzak

et al. 2022

Materials

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“…Some other related works include mechanical effects in the workpiece (Bay et al, 2003;Hömberg, 2004). A more extensive bibliographic review can be found in (Lavers, 2008). The aim of this chapter is to deal with the coupled thermo-magneto-hydrodynamic simulation of an induction heating furnace like the one described above.…”

Section: Introductionmentioning

confidence: 99%

Numerical Modelling of Industrial Induction

Vázquez¹,

Salgado²,

Bermúdez³

et al. 2011

Advances in Induction and Microwave Heating of Mineral and Organic Materials

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“…In order to improve the complete system performance, the inductor system equivalent impedance must be adapted to the power converter; consequently, efficient coil optimization is the goal of the system design process. However, such coil design process has to deal with several geometrical constraints and a wide load variety; therefore, roughly iterative simulation procedure is carried out with analytical (Hurley and Duffy, 1995) or numerical methods (Enokizono and Tanabe, 1995;Bay et al, 2003;Lavers, 2008). Such numerical simulations are based on the induction load modeling considering an homogeneous linear medium.…”

Section: Introductionmentioning

confidence: 99%

An application of the impedance boundary condition for the design of coils used in domestic induction heating systems

Carretero

Lucía

Acero

et al. 2011

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

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Purpose -The aim of this paper is to propose a design procedure based on the impedance boundary condition in order to simplify the design of inductors for domestic induction heating systems. Design/methodology/approach -An electromagnetic description of the inductor system is performed to substitute the effects of a component, named system load, for a mathematical condition, the so-called impedance boundary condition. This is suitable to be used in electromagnetic systems involving high conductive materials at medium frequencies, as it occurs in an induction heating system. Applying this approach, a simplified electrical model arises from the general system. Findings -A considerable reduction in the efforts devoted to design a coil for induction heating purposes is achieved, because the solution considering the variation of three physical parameters are projected to a one-dimensional space only depending on a single parameter named corrected penetration depth. This proposal assesses the working conditions of standard induction systems. Practical implications -This work is performed to achieve a better understanding of the fundamentals involved in the electromagnetic modeling of an induction heating system. The main goal is the definition of a better coil design process because it is probably the most time-consuming task in the construction of a complete induction system. Originality/value -In this paper, the so-called corrected penetration depth is defined. This single parameter allows explaining the influence of the physical parameter of the inductor load and the excitation frequency in the equivalent of the complete inductor system. The numerical results carried out considering the corrected penetration depth instead of the physical load properties have been validated experimentally. IntroductionDomestic induction heating systems are usually fed by a power electronic inverter working at a switching frequency ranging from 20 to 100 kHz, thus, the inductor system is viewed as an electrical equivalent impedance (Acero et al., 2010). The inductor system is made up of a coil placed between an electrical conductive medium, which is the load to be heated up by the system, and a magnetic insulator playing the role of flux concentrator (Acero et al., 2006) as can be seen in Figure 1. In order to improve the complete system performance, the inductor system equivalent impedance must be adapted to the power converter; consequently, efficient coil optimization is the goal of the system design process. However, such coil design process has to deal with several geometrical constraints and a wide load variety; therefore, roughly iterative simulation procedure is carried out with analytical (Hurley and Duffy, 1995) or numerical methods (Enokizono and Tanabe, 1995;Bay et al., 2003;Lavers, 2008). Such numerical simulations are based on the induction load modeling considering an homogeneous linear medium. Then, the load is characterized by means of its physical properties, for instance, electrical conductivity s and magnetic perme...

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State of the art of numerical modeling for induction processes

Cited by 20 publications

References 118 publications

Development of Induction Heating System Ensuring Increased Heating Efficiency of the Charge Material in a Forging

Development of Induction Heating System Ensuring Increased Heating Efficiency of the Charge Material in a Forging

Numerical Modelling of Industrial Induction

An application of the impedance boundary condition for the design of coils used in domestic induction heating systems

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