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Large eddy simulation of flow and heat transfer over a cylinder in axial flow
KTH, School of Engineering Sciences (SCI), Mechanics.
(English)Manuscript (Other academic)
National Category
Computational Mathematics
Identifiers
URN: urn:nbn:se:kth:diva-5206OAI: oai:DiVA.org:kth-5206DiVA: diva2:8022
Note
QC 20101019Available from: 2005-05-31 Created: 2005-05-31 Last updated: 2010-10-19Bibliographically approved
In thesis
1. CFD in the design of gas quenching furnace
Open this publication in new window or tab >>CFD in the design of gas quenching furnace
2005 (English)Doctoral thesis, comprehensive summary (Other scientific)
Abstract [en]

This thesis focuses on the numerical and theoretical studies of gas quenching in industrial furnaces. Gas quenching is the rapid cooling of metal pieces, aiming at forcing a phase transformation of the metal structure to improve its mechanical properties. The numerical methodology has been evaluated with respect to the desired accuracy and different aspects of the flow with importance for achieving an optimized process have been investigated. Initially, attention was paid to the flow and heat transfer fields both in an empty furnace and in a furnace loaded with different charges with the objective to study the influence of the charge configuration on the flow and heat transfer uniformity. This study led to the identification of several possible improvements, which are currently being implemented by the industrial partners of this project. As earlier studies had shown the importance of flow uniformity on the quality of the heat treatment, the subsequent work focused substantially on the flow uniformity upstream of the quenching zone resulting in design recommendations for the particular type of furnace under consideration. The dependence of the performance of the coolant medium on its composition was investigated theoretically and an analysis of most important parameters was carried out. Improved knowledge of the effect of gas mixture composition on heat transfer was added to the body of knowledge already available.

Place, publisher, year, edition, pages
Stockholm: KTH, 2005. xii, 47 p.
Series
Trita-MEK, ISSN 0348-467X ; 2005:12
Keyword
Numerical analysis, Gas quenching, modeling, CFD, gas mixtures, uniformity., Numerisk analys
National Category
Computational Mathematics
Identifiers
urn:nbn:se:kth:diva-239 (URN)
Public defence
2005-06-16, D2, D, Lindstedsvägen 5, Stockholm, 10:00
Opponent
Supervisors
Note
QC 20101019Available from: 2005-05-31 Created: 2005-05-31 Last updated: 2010-10-19Bibliographically approved

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf