Low computational-complexity model of eaf arc-heat distribution

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Investigation of Voltage Unbalance Problems In Electric ...

Investigation of Voltage Unbalance Problems In Electric Arc Furnace Operation Mode . ... but the current can still contain low-frequency fluctuations. The temperature and heat of the arc are high with a liquid steel bath, and the thermal conduction is low [6]. Figure 1. ... Model Description . Our Electric arc furnace melt steel, by applying an ...

iopscience.iop.org

an arc column, fundamental factors, such as Amperes law, Ohms law, the turbulence model, transport equations of mass, momentum and energy of plasma °ow, have to be coupled for ana-

A similarity measure for graphs with low computational ...

We prove the existence and uniqueness, local in time, of the solution of a one-phase Stefan problem for a non-classical heat equation for a semi-infinite material with a heat

Welding Simulation Welding Heat Transfer

In order to both consider the impact of radiation heat and reduce the computational complexity. ellipsoidal power density distribution model. Paris. whose value depends on temperature.

A reduced low-temperature electro-thermal coupled model ...

A low-temperature electro-thermal coupled model, which is based on the electrochemical mechanism, is developed to accurately capture both electrical and thermal behaviors of batteries. Activation energies reveal that temperature dependence of resistances is greater than that of capacitances.

D. Rosenthal, Mathematical theory of heat distribution ...

Introduction Arc welding process plays a vital role in manufacturing. Despite the widespread use of arc welding for joining the metals, total automation of the process is yet to be achieved, and it is so due to the fact that the physics of the problem is not fully understood and quantified.

.calvin.edu

As a result, an enhanced and low computational complexity method for parameters estimation of time-varying frequency signals is attained. This chapter describes a PLL (Phase-Locked Loop) based harmonic estimation system which makes use of an analysis filter bank and multirate processing.

Reduced-Order Modeling of Turbulent Reacting Flows with ...

distribution function (PDF) closure model. The SLFM includes the ... way without increase in computational complexity of the ROM formulation. ... Reduced-Order Modeling of Turbulent Reacting Flows with Application to Ramjets and Scramjets Sean M. Torrez, James F. Driscoll, Matthias Ihme, and Matthew L. Fotia ...

Temperature prediction in electric arc furnace by the use ...

Drzewa decyzji są jednymi z metod inteligencji obliczeniowej, które okazały się niezawodne przy rozwiązywaniu skomplikowanych, wielowymiarowych problemów obliczeniowych.

Simplified numerical approach for the thermo-mechanical ...

The need of a strong improvement of productivity and reliability led the adoption of advanced modeling techniques in the design of steelmaking plants components. In this work a procedure based on a finite element simulation is proposed in order to perform a durability analysis of an anode for ...

Development of a new combined heat source model for ...

based on a Gaussian heat density distribution and employs a ... et al. [10] proposed a combined heat source model for arc welding which also employed a disc source to represent radi- ... reduce computational complexity, the heat source is in most

Vito Logar - Google Scholar Citations

Their combined citations are counted only for the first article. ... Low computational-complexity model of EAF arc-heat distribution. A Fathi, Y Saboohi, I Škrjanc, V Logar. ISIJ International 55 (7), 1353-1360, 2015. 9: ... A computational model for heat transfer coefficient estimation in electric arc furnace. V Logar, A Fathi, I Škrjanc ...

Investigation on the Influence of the Arc Region on Heat ...

The melting of scrap in an electric arc furnace is a highly energy intensive process, whereby the energy required depends on the individual operational parameters of a heat, size of

International Journal of Industrial and Systems ...

Due to the computational complexity of the integer programming model, two heuristic approaches are proposed to obtain more efficient and practical solutions. Through our heuristics, we split the problem into the routing and location-allocation models and solve them sequentially.

IET Digital Library: New spectral decomposition based ...

A spectral decomposition-based approach is proposed to estimate the light flicker caused by electrical arc furnaces (EAFs) where the system frequency deviates significantly due to the EAF operation. Analytical expressions of the instantaneous light flicker sensation are obtained beginning from a voltage waveform and these expressions are used to obtain a flicker estimation method based on the ...

Engineering Applications of Computational Fluid Mechanics

Engineering Applications of Computational Fluid Mechanics, 10(1), 172 ... Engineering Applications of Computational Fluid Mechanics, 10(1), 44 ... An excellent agreement has been documented between the results of the two methods while the computational complexity is obviously very different. For these reasons, the semi-analytical method is the ...

Low Computational-complexity Model of EAF Arc-heat ...

The paper presents a computational model and the corresponding algorithm for estimating the arc energy distribution to conductive, convective and radiative heat transfer in an electric arc furnace (EAF).

Computer simulation of a workpiece temperature field ...

A model has been built of the grinding temperature ® eld based on the ® nite element method (FEM). The dynamic temperature distribution of a workpiece during the whole grinding process can

1-D Heat transfer through the refractory and steel walls

At low Reynolds numbers, the heat transfer due to slag convection and viscous dissipation is negligible, and the heat conduction along the radial direction dominates the energy transport mechanism. Therefore, the slag layer, refractory layer, and steel shell layer can be modeled using the same governing equation.

Modeling of Linear Gas Tungsten Arc Welding of Stainless

Modeling of Linear Gas Tungsten Arc Welding of Stainless Steel P. MARAN, T. SORNAKUMAR, and T. SUNDARARAJAN ... Paley and Hibbert[3] developed a computational model to evaluate the temperature distribution in low-carbon steel plates during single-pass and multipass ... Fig. 1Distribution of heat flux from the electric arc.

Decentralized Inverse Model for Estimating Building Fire ...

It is a procedure for the sampling to converge to the target posterior distribution, or in other words, to reach a stationary distribution of the posterior distribution. Some automatic methods for determining the optimal burn-in period are available in related literatures.

Measurement and simulation analysis of internal pressure ...

Compared with a fixed arc model, the moving arc model provides a more precise arc distribution and pressure in the arc chamber of an MCCB. I. INTRODUCTION Damage to the arc chamber of a low-voltage (LV) molded-case circuit breaker (MCCB) may result in

Power Quality Measurements and Operating Characteristics ...

1 Power Quality Measurements and Operating Characteristics of Electric Arc Furnaces. Pedro E. Issouribehere (*),Fernando Issouribehere (*) IEEE Student Member, and Gustavo A. Barbera (*) Abstract Power quality is of increasing concern to utilities and their customer alike.

Journal of Thermal Science and Engineering Applications

The microchannel heat exchanger studied here is a plate-type, robust heat exchanger that combines compactness, low pressure drop, high effectiveness, and the ability to operate with a very large pressure differential between hot and cold sides.

V.S.: Hough forests for object detection, tracking, and ...

Our model also allows efficient and seamless incorporation of prior knowledge about the problem instance such as the height or orientation of the human subject which can be available from the problem context or via a temporal model. We show that our method significantly outperforms state-of-the-art methods for pose estimation from depth images.

Model Fitting for Electric Arc Furnace Refining manualzz.com

Search among more than 1.000.000 user manuals and view them online in .pdf

Uncertainty Propagation Analysis of Computational Models ...

It is a well-known fact that such models typically involve multiple sources of uncertainty that originate from different sources such as model parameters uncertainty, or model

1 Shadow Detection Algorithms for Tra c Flow Analysis: a ...

1 Shadow Detection Algorithms for Tra c Flow Analysis: a Comparative Study Andrea Prati, Ivana Miki c, Costantino Grana and Mohan M. Trivedi Abstract Shadow detection is critical for robust and re-liable vision-based systems for tra c ow analysis. In this paper we discuss various shadow detection approaches and compare two critically.

Low Computational-complexity Model of EAF Arc-heat ...

The paper presents a computational model and the corresponding algorithm for estimating the arc energy distribution to conductive, convective and radiative heat transfer in an electric arc furnace ...

Minimizing Energy Cost in Electric Arc Furnace Steel ...

Journal of Energy is a peer-reviewed, Open Access journal that publishes original research articles as well as review articles relating to the science and technology of energy generation, distribution, storage, and management.

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