Modelling of Heat Transfer at the Solid to Solid Interface

Rywotycki, M.; Malinowski, Z.; Falkus, J.; Sołek, K.; Szajding, A.; Miłkowska-Piszczek, K.

doi:10.1515/amm-2016-0063

Cited by 4 publications

(3 citation statements)

References 7 publications

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“…At present, the authors of papers [53][54][55] in their computing based on the Inverse method, use both their original source codes and commercial computing packages. The presented papers show that using the inverse analysis in the numerical modelling of the continuous casting process is very widely applied, due to the possibility of precise determination of boundary conditions and the selected material-related parameters.…”

Section: Inverse Modelingmentioning

confidence: 99%

Control and Design of the Steel Continuous Casting Process Based on Advanced Numerical Models

Miłkowska-Piszczek

Falkus

2018

Metals

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The process of continuous casting of steel is a complex technological task, including issues related to heat transfer, the steel solidification process, liquid metal flow and phase transitions in the solid state. This involves considerable difficulty in creating the optimal process control system, which would include the influence of all the physico‐chemical phenomena which may occur. In parallel, there is an intensive development of new mathematical models and an increase in computer performance, therefore complex numerical simulations requiring substantial computing time can be conducted. This paper presents a review of currently applied numerical methods allowing the phenomena accompanying the process of continuous casting of steel to be accurately represented. Special attention was paid to the selection of appropriate methods to solve the technological problem selected. The possibilities of applying selected numerical models were analysed in order to modify and improve the existing process or to design a new one linked to the implementation of new steel grades in the current production. The description of the method of defining the boundary conditions, initial conditions and material parameters as vital components ensuring that numerical calculations based upon them in the finite element method, which is that most frequently applied, are correct is an important element of the paper. The possibility of reliably defining the values of boundary parameters on the basis of information on the intensity of cooling in individual zones of the continuous casting machine was analysed.

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Section: Inverse Modelingmentioning

confidence: 99%

Control and Design of the Steel Continuous Casting Process Based on Advanced Numerical Models

Miłkowska-Piszczek

Falkus

2018

Metals

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“…Contact heat transfer also plays an important role in various processes involved in the manufacturing and processing of steel products. Most often these are continuous steel casting and plastic forming processes [3,4].…”

Section: Introductionmentioning

confidence: 99%

Research on Thermal Contact Resistance in a Bed of Steel Square Bars Using Thermovision

Urbaniak

2019

Acta Phys. Pol. A

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The article presents the results of experimental research on the determination of thermal resistance values occurring on contact surfaces of adjacent steel square bars. The places of such contact in the theory of contact heat conduction are called connectors. More generally, this problem is related to the determination of the effective thermal conductivity of the porous charge in the form of a bundle of square bars. The value of coefficient k ef is necessary to optimize the heat treatment of square bars heated in the form of bundles. One of the most important parameters affecting the value of k ef is the thermal resistance of the connectors. This size of this can be determined both analytically and experimentally. Due to the geometrical complexity of the connectors being created by surfaces of adjacent bars and the oxidation phenomenon, the theoretical models developed so far cannot be applied. On the other hand, in standard measurement techniques of this parameter the sample with a length of several centimeters are used, which allows measurement of the temperature distribution. Because the transverse dimensions of bars are an order of magnitude smaller, these methods cannot be used in the analyzed case, too. It was decided to use a partially innovative experimental technique to determine the considered thermal resistance. The originality of the proposed method consists in using infrared measurements to research the temperature field of the analyzed medium. On the basis of the obtained data, the value of the sought parameter will be determined using the analytical dependences concerning heat conduction.

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“…The time of contact was 30 s in each test. The full description of the test stand and the experiment is available in the literature [13] The results of the temperature measurements are shown in Fig. 3.…”

Section: Introductionmentioning

confidence: 99%

The Influence of the Model Selected Parameter Measurement Error on the Accuracy of Heat Transfer Coefficient Determination Method for Contact between Rolls and the Cast Strand

Rywotycki

2016

Archives of Metallurgy and Materials

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The paper presents a heat transfer model between two surfaces which are in contact under an external force. The developed heat transfer boundary condition model has been obtained using a new methodology for determining heat flux transferred between two solid surfaces. The methodology consists of two parts: experimental and numerical one. The experimental part involves measurements of temperature at specific points in two samples brought into contact. The numerical part uses an inverse method and the finite element method to calculate the heat flux at the interface.The effect of uncertainty of input parameters for the calculation of heat transfer coefficient has been analysed. These have included: thermal conductivity, specific heat and location of thermocouples. Verification calculation with new value of input parameters for their impact on the accuracy of the solution has been done.The calculations have been performed using original software which uses the inverse method and FEM.

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Modelling of Heat Transfer at the Solid to Solid Interface

Cited by 4 publications

References 7 publications

Control and Design of the Steel Continuous Casting Process Based on Advanced Numerical Models

Control and Design of the Steel Continuous Casting Process Based on Advanced Numerical Models

Research on Thermal Contact Resistance in a Bed of Steel Square Bars Using Thermovision

The Influence of the Model Selected Parameter Measurement Error on the Accuracy of Heat Transfer Coefficient Determination Method for Contact between Rolls and the Cast Strand

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