Estimation of the Parameters of Electromagnetic Field at Induction Device by the Aid of Computer Simulation (original) (raw)

Numerical Based Simulation and Electromagnetic Field Calculation at Metal Induction Heating

Paper is presenting results of research on application of simulation software in defining the parameters of the electromagnetic field and temperature distribution in induction heating for metal conductor. Modern simulation programs for calculation of parameters of electromagnetic field and head transfer are based on numerical methods such as Finite Differences Methods (FDM) and Finite Element Method (FEM). In this paper is used ELTA simulation program, based on FDM method, product of the Flux control.

Study of Power and Field Distributions in Induction Heating system by Finite element method

To solve the electromagnetic problems of induction heating, there are two main types of solutions. Analytical solution which is limited to one dimensional problems of axially symmetric shapes, and numerical methods which are associated with the advent of digital computers and they can be developed in two dimensions. The finite element method FEM is one numerical methods to give an accurate solution to the given problem. The objective of paper is to present a normalized solution to reduce the complex calculations efforts with acceptable accuracy and present the results in a general form to be a suitable for more than one particular configuration.

About Numerical Analysis of Electromagnetic and Thermal Field in Induction Equipment with Moving Bodies

revue.elth.pub.ro

This paper presents a numerical computation method and also an analysis procedure that can be used in order to solve the cvasistationary electromagnetic and thermal field for induction heating devices with moving parts. The analysis takes into account the relative movement between inductor and the heated part. The proposed method allows to use the same FEM discretization network for all steps of the analysis. Numerical simulation allows determining accurately the thermal regime of the induction heating process and the optimal parameters which offer maximum efficiency. Therefore the experiments' number in designing process can be decreased and a better knowledge of the process can be obtained. The obtained results offer important information during the ferromagnetic hardening process, and also for the processes optimization and equipment design.1.

Computational Modeling of Induction Heating Process

Progress In Electromagnetics Research Letters, 2009

An accurate 2D steady state mathematical model for induction heating process is described and additional results of electromagnetic field, eddy currents distribution and volumetric heat generation have been computed for a sample setup using a finite element method. For the calculations, the input voltage of induction coil is set to be 200 V with a frequency of 10 kHz. It was shown that for the case considered here, the distribution of eddy currents density along the radius/thickness of the workpiece has a damped sinusoidal wave-shaped form.

Computer modeling of coupled electromagnetic, temperature and magnetohydrodynamic fields in the induction heating and melting devices

COUPLED VII : proceedings of the VII International Conference on Computational Methods for Coupled Problems in Science and Engineering, 2017

Computer modeling is necessary part of design new induction heating and melting devices [1]. One of the complicated technologies when it is necessary to simulate coupled electromagnetic, temperature and magnetohydrodynamic fields is heating and melting of titanium alloys in the alternating electromagnetic field. Thermal processing of titanium alloys in the inductor has some features that it is necessary to take into account on the designing of the advanced technology and equipment. Low thermal conductivity and high temperature losses at the surface result in maximum temperature inside of the billet that could under appropriate conditions exceed melting point. In this way it is possible to obtain liquid phase of titanium alloy inside of the billet and protect it from the contact with surrounding atmosphere. To get this it is necessary to choose the right regime of processing, frequency of current, power and thermal conditions. At the same time precise heating with very strong execution of the temperature profile during the heating time are essential for thermal processing of titanium alloys in this technology [2]. Mathematical model comprising computation of electromagnetic, temperature, MHD fields after getting melt zone and dynamic of its growth was developed. The calculation of the melting process has been carried out by the method "enthalpy-porosity" with application of models of turbulent currents k-ω SST in a non-static setting. Electromagnetic forces and heat sources have been defined by solving a harmonic task by the method of finite elements on a vector magnetic potential in the system "inductor-load" for each iteration of the hydrodynamic task. Experiments confirmed need in simulation of MHD fields to receive good coincidence. Using of the developed models for simulation of electromagnetic processing billets make it easy to develop and implement optimal heat processing systems for the crucibleless induction melting of titanium alloys.The calculations on the basis of the model and the analysis of physical processes with non-crucible melting of titanium alloys have also been carried out.

Numerical Simulation of Induction Heating of Steel Plate Products

2018

Main methods of induction heating of steel plate products are discussed in this paper. Different 2D and 3D models are developed for investigation and design of the induction coils for heating steel slabs and strip. A new concept of universal induction coils that allow using a combination of longitudinal and transverse flux for heating plate products is discussed in this paper. Keywords— Coupled electromagnetic and temperature fields, electromagnetic processing of metals, induction heating, multiphysics problems

Aspects Regarding the Numerical Modeling of the Electromagnetic Induction Heating Process Used for Hot Deformation of Semi-finished Parts

Journal of Electrical and Electronics Engineering, 2014

The paper deals with numerical computation methods for solving the quasistationary electromagnetic field for ferromagnetic semi-finished parts placed into industrial inductor. Finite element method is used for eddy current problem solution initially for fixed ferromagnetic parts. The coupled question electromagnetic field and thermal field during induction heating process is solved. Power density as a function of amplitude and frequency of exciting current is evaluated. Thermal field distribution inside the semi-finished part is also quantified. These results are an essential phase in the design optimization of industrial induction equipment and the heating process.

Numerical analysis and thermographic investigation of induction heating

International Journal of Heat and Mass Transfer, 2010

Induction heating process was investigated numerically and experimentally. Cylindrically shaped steel workpiece was heated with different heating protocols. Numerical model with coupled electromagnetic and thermal physical phenomena was solved using the finite element method. Temperature-dependent and temperature-independent steel material properties were considered and their impact on simulation results was evaluated. Simulation results were also compared with experimental measurements using an algorithm for processing thermographic images. Good agreement between them was obtained for workpieces without defects. With ability to observe temperature distributions and material defects, the thermographic camera demonstrated to be an effective non-contact measurement tool and suitable alternative to thermocouples.

Development of a Model for Induction Heating

2002

The development of this derivation was taken from References [1] to [6]. The development leads to a set of equations that can be used to solve for the amount of induction heating within a conductor. The following equations are a version of Maxwell's equations. Details of the intial assumptions to reach this state can be found in References [2] and [5].