Journal ArticleDOI
Thermal Analysis During Continuous Casting Process Using Effective Heat Capacity Method
TLDR
In this paper, a numerical analysis has been carried out to investigate the two-phase solidification process in continuous castings and an effective heat capacity method is used for this purpose.Abstract:
A numerical analysis has been carried out to investigate the two-phase solidification process in continuous castings. An effective heat capacity method is used for this purpose. The radiation heat transfer at the mold metal interface was taken into account. The results of this method match well with the results obtained by analytical methods. The investigation included the ranges of mold cooling rate Bi 2 , inlet temperature θ 0 , and Peclet number Pe from 0.1-0.5, 1.2-2.0, and 0.1-1.0, respectively. A constant Stefan number Ste of 2.5 was used. It is observed that the solidification process is delayed with the increase of the withdrawal speed and with the increase of the liquid metal inlet temperature. With increased withdrawal speed, the region with temperature gradient moves downward. Steep axial temperature gradient was observed in the cast metal in the mold region.read more
Citations
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Journal ArticleDOI
Heat transfer—A review of 2005 literature
Richard J Goldstein,W. E. Ibele,Suhas V. Patankar,Terrence W. Simon,Thomas H. Kuehn,Paul J Strykowski,Kumar K. Tamma,Joachim Heberlein,Jane H. Davidson,John C. Bischof,Francis A Kulacki,Uwe Kortshagen,Sean C. Garrick,Vinod Srinivasan,Kalyanjit Ghosh,Rajat Mittal +15 more
TL;DR: A review of the heat transfer literature published in 2005 can be found in this article, where the authors restrict themselves to papers published in English through a peer-review process, with selected translations from journals published in other languages.
Journal ArticleDOI
Numerical simulation of 3-d freezing and heating problems for combined cryosurgery and hyperthermia therapy
Zhong-Shan Deng,Jing Liu +1 more
TL;DR: In this article, a numerical algorithm based on the effective heat capacity method is established to solve three-dimensional (3D) phase change problems of biological tissues subject to combined freezing and heating, and the accuracy of the numerical code thus compiled is validated through comparisons of the calculation results with a 1-D exact solution for a semi-infinite region solidification problem.
Journal ArticleDOI
Modeling of multidimensional freezing problem during cryosurgery by the dual reciprocity boundary element method
Zhong-Shan Deng,Jing Liu +1 more
TL;DR: In this article, a numerical algorithm based on the dual reciprocity boundary element method (DRBEM) is developed to solve multidimensional phase change problem of biological tissues subject to cryosurgery.
Journal ArticleDOI
Feasibility study for thermal protection by microencapsulated phase change micro/nanoparticles during cryosurgery
Yonggang Lv,Yang Zou,Li Yang +2 more
TL;DR: In this article, a new method was proposed to prevent the healthy tissue around the cancerous tissue from thermal injury by microencapsulated phase change micro/nanoparticles, in which the phase change materials (PCMs) with large latent heat and low thermal conductivity are microencapped by liposome and delivered to the healthy tissues by mainline, arterial injection, hypodermic injection or direct injection.
Journal ArticleDOI
Heat transfer - A review of 2000 literature
Richard J Goldstein,E. R. G. Eckert,W. E. Ibele,Suhas V. Patankar,Terrence W. Simon,Thomas H. Kuehn,Paul J Strykowski,Kumar K. Tamma,Avram Bar-Cohen,Joachim Heberlein,Jane H. Davidson,John C. Bischof,Francis A Kulacki,Uwe Kortshagen,Sean C. Garrick +14 more
References
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Journal ArticleDOI
A continuum model for momentum, heat and species transport in binary solid-liquid phase change systems—I. Model formulation
W.D. Bennon,Frank P. Incropera +1 more
TL;DR: In this article, a set of continuum conservation equations for binary, solid-liquid phase change systems is presented. But these equations have been cast into forms amenable to clear physical interpretation and solution by conventional numerical procedures.
Journal ArticleDOI
Numerical solution of phase-change problems
TL;DR: A three-time level implicit scheme, which is unconditionally stable and convergent, is employed for the numerical solution of phase change problems, on the basis of an analytical approach consisting in the approximation of the latent heat effect by a large heat capacity over a small temperature range as discussed by the authors.
Journal ArticleDOI
Analysis of melting in the presence of natural convection in the melt region
TL;DR: In this article, an analysis of multidimensional melting is performed which takes account of natural convection induced by temperature differences in the liquid melt, and the results differ decisively from those corresponding to a conventional pure-conduction model of the melting problem.
Journal ArticleDOI
Heat Transfer During Melting and Solidification of Metals
TL;DR: In this article, a discussion relative aux processus de transfert de chaleur fondamentaux lors de la transformation de phase solide-liquide and comparaison entre donnees experimentales and previsions of modeles mathematiques numeriques.
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Conjugate gradient method for determining unknown contact conductance during metal casting
TL;DR: In this article, an inverse solution methodology based on the conjugate gradient method is developed for estimating the variation of air-gap resistance with time from the transient temperature measurements taken with thermocouples inside the casting region and at the outer mold surface.
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