Influence of magnetic flux concentrator on the induction heating process in crystal growth systems-geometry investigation

CrystEngComm ◽  
2018 ◽  
Vol 20 (48) ◽  
pp. 7857-7865 ◽  
Author(s):  
Hamed Heidari ◽  
Mohammad Hossein Tavakoli ◽  
Sayed Omid Sobhani ◽  
Mohtaram Honarmandnia
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Crystal Growth ◽  
Magnetic Flux ◽  
Induction Heating ◽  
Heating Process ◽  
Geometry Effect ◽  
Czochralski Crystal Growth ◽  
Growth System ◽  
Flux Concentrator

In this paper, a magnetic flux concentrator (MFC) is reported, and its geometry effect on the induction heating process has been calculated in a Czochralski crystal growth system using the 2D finite element method.

3D Simulation of the Coil Geometry Effect on the Induction Heating Process in Czochralski Crystal Growth System

2020 ◽  
Vol 55 (3) ◽  
pp. 1900147 ◽  
Author(s):  
Hamed Heidari ◽  
Mohammad Hossein Tavakoli ◽  
AbdolJabbar Shokri ◽  
Behnam Mohamad Moradi ◽  
Omid Mohammad Sharifi ◽  
...  
Keyword(s):  
Crystal Growth ◽  
Induction Heating ◽  
3D Simulation ◽  
Heating Process ◽  
Geometry Effect ◽  
Czochralski Crystal Growth ◽  
Coil Geometry ◽  
Growth System

Numerical Simulation of Fz Single Crystal Growth Process with Radio-Frequency Induction Heating

1995 ◽  
Vol 398 ◽  
Author(s):  
Y. Masuda ◽  
T. Tsukada ◽  
M. Hozawa
Keyword(s):  
Finite Element ◽  
Crystal Growth ◽  
Radio Frequency ◽  
Single Crystal ◽  
Induction Heating ◽  
Surface Shape ◽  
Temperature Fields ◽  
Rf Coil ◽  
Zone Length ◽  
Growth System

ABSTRACTAnalyses of a floating zone (FZ) crystal growth system with a radio frequency (RF) induction heating are carried out. The electromagnetic and temperature fields, and surface interfaces are solved for numerically. Finite element methods are used for the calculation of the temperature fields and interfaces and the hybrid finite element and boundary element methods are used for the calculation of the electromagnetic field. The calculation domain is divided into eleven regions, each of which, except for the RF coil region, require a coordinate transformation. In the present study, the silicon FZ growth system ,where the diameter of both feed-rod and single crystal were set to be 1cm was computed. The Lorentz force is found to play an important role in determining the melt free surface shape and the molten zone length. The effect of the current density, frequency of RF coil and crystal growth rate are investigated.

Modeling and Simulation of Induction Heating with Magnetic Flux Concentrator

2012 ◽  
Vol 268-270 ◽  
pp. 983-991 ◽  
Author(s):  
Feng Li ◽  
Xue Kun Li ◽  
Tian Xing Zhu ◽  
Qian Zhe Zhao ◽  
Yi Ming Kevin Rong
Keyword(s):  
Finite Element ◽  
Magnetic Flux ◽  
Modeling And Simulation ◽  
Electric Fields ◽  
Induction Heating ◽  
Element Model ◽  
Aisi 1045 Steel ◽  
Aisi 1045 ◽  
1045 Steel ◽  
Flux Concentrator

Induction heating possesses wide application in surface hardening for steels. In recent years, the emergence of metal powder bonded magnetic flux concentrator (MPB-MFC) enables induction heating better capability, efficiency, and controllability, therefore the analytical understanding through modeling and simulation becomes necessary for process design and optimization. In this paper, the mechanism of the energy transformation in induction heating with magnetic flux concentrator is carried out. The MPB-MFC assisted induction heating for AISI 1045 steel is studied by comparing the finite element simulation with experimental results. The finite element model solves the coupled electro-magnetic-thermal computation problem, which also involves the consideration of the non-linear material magnetic properties in the process. To verify the simulation, middle-frequency induction heating experiments are conducted to compare with the simulated results. The comparison proves the efficacy of the FEM model, and discloses the inner-correlation of the thermal-magnetic-electric fields in the process.

Basic Statements of Research and Magnetic Field of Axial Excitation Inductor Generator

2011 ◽  
Vol 28 (1) ◽  
pp. 49-52
Author(s):  
Igors Stroganovs ◽  
Andrejs Zviedris
Keyword(s):  
Magnetic Field ◽  
Finite Element Method ◽  
Finite Element ◽  
Magnetic Flux ◽  
Magnetic System ◽  
System Optimization ◽  
Magnetic Saturation ◽  
The Finite Element Method ◽  
Flux Linkage ◽  
Axial Excitation

Basic Statements of Research and Magnetic Field of Axial Excitation Inductor GeneratorIn this work the main features of axial excitation inductor generators are described. Mathematical simulation of a magnetic field is realized by using the finite element method. The objective of this work is to elucidate how single elements shape, geometric dimensions and magnetic saturation of magnetic system affect the main characteristics of the field (magnetic induction, magnetic flux linkage). The main directions of a magnetic system optimization are specified.

scholarly journals A Novel Excitation Approach for Power Transformer Simulation Based on Finite Element Analysis

2021 ◽  
Vol 11 (21) ◽  
pp. 10334
Author(s):  
Wen-Ching Chang ◽  
Cheng-Chien Kuo
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Magnetic Flux ◽  
Flux Density ◽  
Power Transformer ◽  
Core Loss ◽  
Power Transformers ◽  
Magnetic Flux Density ◽  
External Excitation ◽  
Element Method

Power transformers play an indispensable component in AC transmission systems. If the operating condition of a power transformer can be accurately predicted before the equipment is operated, it will help transformer manufacturers to design optimized power transformers. In the optimal design of the power transformer, the design value of the magnetic flux density in the core is important, and it affects the efficiency, cost, and life cycle. Therefore, this paper uses the software of ANSYS Maxwell to solve the instantaneous magnetic flux density distribution, core loss distribution, and total iron loss of the iron core based on the finite element method in the time domain. . In addition, a new external excitation equation is proposed. The new external excitation equation can improve the accuracy of the simulation results and reduce the simulation time. Finally, the three-phase five-limb transformer is developed, and actually measures the local magnetic flux density and total core loss to verify the feasibility of the proposed finite element method of model and simulation parameters.

Coupled Electromagnetic-Thermal Field Investigation in Induction Heating Device

2009 ◽  
Vol 152-153 ◽  
pp. 407-410
Author(s):  
Ilona Ilieva Iatcheva ◽  
Rumena Stancheva ◽  
Hristofor Tahrilov ◽  
Ilonka Lilianova
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Induction Heating ◽  
Heating System ◽  
Field Investigation ◽  
Field Analysis ◽  
The Finite Element Method ◽  
Nonlinear Transient ◽  
Induction Heating System ◽  
Element Method

The aim of the work is precise coupled –electromagnetic and temperature field analysis of an induction heating system by finite element method. Presented example is referred to real induction heating system. The problem was solved as nonlinear, transient and axisymmetrical. The numerical model of the coupled fields is based on the finite element method and electromagnetic and temperature distributions have been obtained using COMSOL 3.3 software package.

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