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Inverse estimation for heat flux distribution at the metal-mold interface using fuzzy inference / Lina Zhu in Journal of heat transfer, Vol. 133 N° 8 (Août 2011) 

Public ISBD [article]  in Journal of heat transfer > Vol. 133 N° 8 (Août 2011) . - pp. [081602/1-6] Titre : Inverse estimation for heat flux distribution at the metal-mold interface using fuzzy inference Type de document : texte imprimé Auteurs : Lina Zhu, Auteur ; Guangjun Wang, Auteur ; Chen, Hong, Auteur Année de publication : 2011 Article en page(s) : pp. [081602/1-6] Note générale : Physique Langues : Anglais (eng) Mots-clés : Inverse  approach  Fuzzy  inference  Heat  flux  distribution  Continuous  casting Index. décimale : 536 Chaleur. Thermodynamique Résumé : This study provides a new inverse approach based on fuzzy inference for solving the problem of estimating heat flux distribution at the metal-mold interface in the continuous casting process. Measured temperatures acquired with the thermocouples buried in the mold are used to obtain corresponding inference results with the fuzzy inference. Then according to the importance of measured information for estimating the heat flux distribution, inference results are weighted to realize estimation of heat flux distribution at the metal-mold interface. Some numerical tests are presented to discuss the validity of the present approach by using different initial guesses of heat flux distribution, the number of measuring points, and measurement errors. In comparison with the conjugate gradient method, it is concluded that the method based on fuzzy inference is of a good anti-ill-posed characteristic. DEWEY : 536 ISSN : 0022-1481 En ligne : http://asmedl.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JHTRAO00013300 [...] [article] Inverse estimation for heat flux distribution at the metal-mold interface using fuzzy inference [texte imprimé] / Lina Zhu, Auteur ; Guangjun Wang, Auteur ; Chen, Hong, Auteur . - 2011 . - pp. [081602/1-6]. Physique Langues : Anglais (eng) in Journal of heat transfer > Vol. 133 N° 8 (Août 2011) . - pp. [081602/1-6] Mots-clés : Inverse  approach  Fuzzy  inference  Heat  flux  distribution  Continuous  casting Index. décimale : 536 Chaleur. Thermodynamique Résumé : This study provides a new inverse approach based on fuzzy inference for solving the problem of estimating heat flux distribution at the metal-mold interface in the continuous casting process. Measured temperatures acquired with the thermocouples buried in the mold are used to obtain corresponding inference results with the fuzzy inference. Then according to the importance of measured information for estimating the heat flux distribution, inference results are weighted to realize estimation of heat flux distribution at the metal-mold interface. Some numerical tests are presented to discuss the validity of the present approach by using different initial guesses of heat flux distribution, the number of measuring points, and measurement errors. In comparison with the conjugate gradient method, it is concluded that the method based on fuzzy inference is of a good anti-ill-posed characteristic. DEWEY : 536 ISSN : 0022-1481 En ligne : http://asmedl.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JHTRAO00013300 [...]