...Amin Shamsi; Alireza Ganjovi; Amir Abbas Shayegani Akmal Purpose The purpose of this study is to numerically examine the heat transfer and transport of space charges in the solid insulating materials [low density polyethylene (LDPE), flame retardant type 4 (FR4), Polytetrafluoroethylene (PTFE...

... being used systematically as a design tool. Compared to CFD, thermal network models use a lumped parameter approach based on the analogy to electric circuits. The network model abstracts fluid dynamics and heat transfer phenomena into a group of interconnected lumped elements whose formulation is based...

... of conventional equivalent model. Based on the law of heat transfer in stator slot, a new layered winding model is put forward. According to winding type and property of impregnations, detailed method and equivalent principle of the new model are presented. The accuracy of this new method has been verified...

...Professor Oszkár Bíró, Professor David A. Lowther and Dr Piergiorgio Alotto; Stephan Klomberg; Ernst Farnleitner; Gebhard Kastner; Oszkár Bíró Purpose – The purpose of this paper is to carry out an analytical approximation model (heat transfer model (HTM)) for the calculation of the heat transfer...

...Stephan Klomberg; Ernst Farnleitner; Gebhard Kastner; Oszkár Bíró Purpose – The purpose of this paper is to present a new computational fluid dynamics model for large electrical machines to simulate the heat transfer at specific components to the appropriate ventilation method. The most...

... advantage of the network approach is its ability to handle complex heat transfer models including conduction, radiation and convection. Thanks to an acceptable accuracy and the moderate computational effort it is traditionally used by designers of power devices for the analysis of temperature rise tests...

...Prof. Oszkár Bíró, Prof. David A. Lowther and Prof. Piergiorgio Alotto; Maximilian Schrittwieser; Oszkár Bíró; Ernst Farnleitner; Gebhard Kastner Purpose – The purpose of this work is to propose a numerical method based on computational fluid dynamics (CFD) for reconstructing the heat transfer...

...Oszkár Bíró; David A. Lowther; Piergiorgio Alotto; Martin Hettegger; Bernhard Streibl; Oszkár Bíró; Harald Neudorfer Purpose For an accurate simulation of the temperature distribution inside an electrical machine a method for deriving the convective heat transfer coefficient numerically would...

...‐frequency induction heating Hyperthermia Shape‐induced magnetic anisotropy Hysteresis loss Eddy current loss Magnetic penetration depth Heat transfer Steels As generally accepted, high‐frequency induction heating is a process which is used to melt, bond, or harden metals and other...

... Zone controlled induction heating Edge effect control Heat transfer Optimization techniques A new technology named ZCIH – zone controlled induction heating has been recently proposed (Fujita et al., 2007 ; Miyagi et al., 2006); it is based on the supply of separate...

... Induction heating Strip Slab Dynamic mode Numerical simulation Heat transfer Electromagnetism Induction through‐heaters of various metal products are wide spread used in industry because of their ability to be directly built into technological lines. Because of this, the through‐heaters must...

... 2011 Electromagnetic induction Heat transfer Yielding Numerical modelling Metals Heating Electromagnetic induction is widely applied for industrial heating of metals for the many advantages it offers, i.e. it is clean, safe, fast, easy controllable and environment friendly. Anyway...

... Publishing Limited 2011 Induction heating Phase modulation Electromagnetic fields Frequency spectrum Temperature field Heat transfer Equation 1 Equation 2 Electrodynamic and thermal processes in a heated body in a cylindrical coordinate system r, φ...

..., as well as, simulation results are qualitatively compared with experimental data for heat transfer coefficient distribution α at the window surface. Findings Contribution of greater k‐energy field obtained with LES calculation leads to prediction of more intensive heat transfer in comparison to k‐ω...

... are its simplicity and the ease of use, once it is necessary only classical heat transfer correlations and few input data. Predicted values showed good agreement with the experimental results, demonstrating that the hypothesis of simplification to a punctual source of thermal energy, Pnn...

...,V_n,Γ_n of the field functions. However, the eigenvalues γ_n,α_n,β_n must first be known. © Emerald Group Publishing Limited 2009 Heat transfer DC cables Numerical analysis...

... Modelling Blood vessels Heat transfer The exposure to electromagnetic field (EMF) at radio‐frequency (RF) can lead to a temperature increase in biological tissues that can be a risk for living beings as stated by International Commission on Non‐Ionizing Radiation Protection (ICNIRP, 1998...

... © Emerald Group Publishing Limited 2008 Electromagnetism Measurement Heat transfer A=sample area (m^{2) Bi=Biot number C_p=total heat capacity (J K−1) c_p=heat capacity (J K−1 kg−1}...

... is investigated. © Emerald Group Publishing Limited 2008 Electromagnetic induction Heat transfer Heat conduction Induction heating is largely used in aluminum manufacturing plants to preheat billets in order to soften the metal before it is pressed through the extruder. In order to avoid...

... conventional heating techniques, based exclusively on heat transfer. Experimental validation of the modelling results confirmed that by altering the synthesis conditions (load geometry, microwave power, auxiliary microwave absorbers) the thickness of the Ni‐Al‐Ti layer can be controlled. Findings...