Applying sensitivity analysis for identification of thermal resistance in continuous casting of metals by inverse approach

• Autorzy: Nawrat A. , Skorek J.
• Języki publikacji: EN

Abstrakty

EN

The problem of appropriate location of the sensors for identification of ingot mould thermal resistance during continuous casting of metals is the subject of the paper. Location of the sensors is based on the results of sensitivity analysis for the steady-state inverse heat conduction problem. Analysed problem belongs to the group of inverse problems. The present work shows also the method of identification of unknown thermal resistance using the temperature measurements at the number of sensors located in the wall of the mould. The influence of the location of the sensors on the results of identification is analysed. Validation of the proposed inverse method realized by comparison results taken from solution of inverse and direct problems. Several numerical examples are presented and analysed.

Słowa kluczowe

EN

finite element method; inverse problem; least squares adjustment method; sensitivity analysis; thermal resistance

• Wydawca: Wydawnictwo Instytutu Maszyn Przepływowych PAN ; Komitet Termodynamiki i Spalania PAN
• Czasopismo: Archives of Thermodynamics
• Rocznik: 2004
• Tom: Vol. 25, no. 1
• Strony: 3--19
• Opis fizyczny: Bibliogr. 14 poz., rys., tab.

Twórcy

autor

Nawrat A.

autor

Skorek J.

• Institute of Thermal Technology, Silesian Technical University, Konarskiego 22, 44-100 Gliwice, Poland

• Department of Automatic Control, Silesian Technical University, Akademicka 16, 44-101 Gliwice, Poland

Bibliografia

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• [3] ENGL H. W., LANGTHALER T., LINZ: Numerical solution of an inverse problem connected with continuous casting of steel, ZOR-Zeitschrift Operations Research, 29(1985) 185-199.
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• [5] HENSEL E.: Inverse Theory and Applications for Engineers, Prentice Hall Advanced Reference Series, 1991.
• [6] NAWRAT A.: Identification of thermal and operation parameters in continuous cast-ing of metals, Ph.D. Thesis, Silesian University of Technology, Gliwice, 2002 (in Polish).
• [7] NAWRAT A., SKOREK J.: Determination of the temperature field in the process of continuous casting of metals by front tracking method, Archives of Thermodynamics, 23(2002), No. 3, 21-41,
• [8] OzisiK M. N.: Heat Conduction, Wiley, New York 1980.
• [9] PRINZ B.: Measuring and modelling of the influence of coatings on the heat transfer between melt/casting and mould during the permanent mould casting of aluminium alloys, COST 504/111 Report, Aachen, Germany 1994.
• [10] SCHMIDT P.: Heat transfer in permanent mould casting, Proc. of the COST 504 Conf. Advanced Casting and Solidification Technology, 1994.
• [11] SKOREK J.: Applying inverse technique for identification of thermal resistance be-tween cast and mould during permanent casting of metals, Nat. Heat Transfer Conf. ASME, HTD- Vvol. 340, 2(1997), 25-31.
• [12] SKOREK .1.: Applying stochastic method for solving inverse heat conduction prob-lems, Proc. of the Symp. on Heat and Mass Transfer, Warsaw 1983, (in Polish).
• [13] SKOREK J.: Applying the least squares adjustment technique for solving inverse boundary heat conduction problems, in Lewis, R. W,, et al., (eds.), Numerical Meth-ods in Thermal Problems, Pineridge Press Limited, London 1993.
• [14] SZARGUT J. ET AL: The least square adjustment technique in thermal engineering, PAN, Wroclaw 1984 (in Polish).