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Título del libro: Thermal Process Modeling - Proceedings From The 5th International Conference On Thermal Process Modeling And Computer Simulation, Ictpmcs 2014
Título del capítulo: Benchmarking of mathematical models for quenching operations: A proposal

Autores UNAM:
JOSE BERNARDO HERNANDEZ MORALES; JORGE SERGIO TELLEZ MARTINEZ;

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Autores externos:

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Idioma:
Inglés

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Año de publicación:
2014

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Palabras clave:

Benchmarking; Heat conduction; Inverse problems; Mathematical models; Quenching; Stainless steel; Thermocouples; Video recording; AISI-304 stainless steel; Degree of confidence; Experimental modeling; Inverse heat conduction problem; Model communities; Model parameters; Thermo-mechanical; Vertical direction; Disks (machine components)

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Resumen:

Mathematical modeling of quenching operations has reached a level of maturity that allows predicting the metallurgical response for a given component with a certain degree of confidence. However, in most cases, model parameters need to be adjusted in order to obtain good fit with experimental data related to a particular application. In contrast, in this paper we present an experimental model that may be used by the modeling community for benchmarking purposes. The system consists of a horizontal AISI 304 stainless steel disc that is rapidly cooled by a water column impinging on its lower surface. The disc was instrumented with five pairs of thermocouples (distributed along the disc radius) to register the thermal response near the lower and upper disc surfaces. While the thermal responses were acquired, the displacement in the vertical direction (at a point located at the center of the upper disk surface), and in the horizontal direction (at a point on the lateral disk surface) were measured. The interaction between the water column and the hot surface were also videotaped. In this fashion, a complete picture of the thermo- mechanical phenomena may be obtained. The results indicate that the model is capable of responding to the various modes of heat transfer occurring upon quenching while showing appreciable distortion. Moreover, the details of the wetting front kinematics could be precisely followed. As an example of the applicability of the data, the thermal responses were used to estimate the distributed heat transfer boundary condition at the lower surface by solving the inverse heat conduction problem considering constant properties and two-dimensional heat flow in an axisymmetric domain. Copyright © 2014 ASM International ® All rights reserved.

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Entidades citadas de la UNAM:

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Fuente:


ISBN:
1627080686
Editorial:
ASM International

Tipo de producto:
Conference Paper