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Title: The Transition From Nucleate Boiling Towards the Convection: Application to the Quenching of Metallic Massive Parts

Abstract

In a recent study on thermal aspects of the quenching process, we developed an original device of measurement which allowed to update the competition between the heat transfer modes according to the quenching conditions and the quenched part size. One shows that, according to the range value of Biot number, the more resistive one part is, the more the boiling phases are relatively short. In order to provide relatively precise data for simulation of the quenching process in the case of strongly resistive parts from a thermal point of view, we undertook experiments on the cooling transition from nucleate boiling towards the convection. The obtained experimental results show that the temperature of transition from the nucleate boiling to the convection increases when the bath temperature decreases. We present the differences between the values of convection coefficient according to whether the bath is agitated or not. Experimental results relating are compared to some classical correlations.

Authors:
 [1];  [2]
  1. LTN-UMR 6607, Universite de Nantes, BP 50609 - 44306 Nantes cedex 3 (France)
  2. Saint-Gobain Research, BP 135, 93303 Aubervilliers Cedex (France)
Publication Date:
OSTI Identifier:
21056980
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 907; Journal Issue: 1; Conference: 10. ESAFORM conference on material forming, Zaragoza (Spain), 18-20 Apr 2007; Other Information: DOI: 10.1063/1.2729680; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ALLOYS; COMPARATIVE EVALUATIONS; CONVECTION; COOLING; CORRELATIONS; NUCLEATE BOILING; QUENCHING; TEMPERATURE DEPENDENCE

Citation Formats

Bourouga, Brahim, and Gilles, Jerome. The Transition From Nucleate Boiling Towards the Convection: Application to the Quenching of Metallic Massive Parts. United States: N. p., 2007. Web. doi:10.1063/1.2729680.
Bourouga, Brahim, & Gilles, Jerome. The Transition From Nucleate Boiling Towards the Convection: Application to the Quenching of Metallic Massive Parts. United States. doi:10.1063/1.2729680.
Bourouga, Brahim, and Gilles, Jerome. Sat . "The Transition From Nucleate Boiling Towards the Convection: Application to the Quenching of Metallic Massive Parts". United States. doi:10.1063/1.2729680.
@article{osti_21056980,
title = {The Transition From Nucleate Boiling Towards the Convection: Application to the Quenching of Metallic Massive Parts},
author = {Bourouga, Brahim and Gilles, Jerome},
abstractNote = {In a recent study on thermal aspects of the quenching process, we developed an original device of measurement which allowed to update the competition between the heat transfer modes according to the quenching conditions and the quenched part size. One shows that, according to the range value of Biot number, the more resistive one part is, the more the boiling phases are relatively short. In order to provide relatively precise data for simulation of the quenching process in the case of strongly resistive parts from a thermal point of view, we undertook experiments on the cooling transition from nucleate boiling towards the convection. The obtained experimental results show that the temperature of transition from the nucleate boiling to the convection increases when the bath temperature decreases. We present the differences between the values of convection coefficient according to whether the bath is agitated or not. Experimental results relating are compared to some classical correlations.},
doi = {10.1063/1.2729680},
journal = {AIP Conference Proceedings},
number = 1,
volume = 907,
place = {United States},
year = {Sat Apr 07 00:00:00 EDT 2007},
month = {Sat Apr 07 00:00:00 EDT 2007}
}
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