Effect of External Forced Flow and Boiling Film on Heat Transfer of AISI 4140 Steel Horizontal Rod During Direct Quenching

The effects of rod falling and moving, external flow field, boiling film and radiation were investigated on fluid flow and heat transfer of AISI 4140 steel horizontal rod during direct quenching by mathematical modeling. The flow field and heat transfer in quenching tank were simulated by computatio...

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Bibliographic Details
Published inJournal of iron and steel research, international Vol. 18; no. 10; pp. 34 - 41
Main Authors Meysami, AH, Ghasemzadeh, R, Seyedein, SH, Aboutalebi, MR
Format Journal Article
LanguageEnglish
Published Singapore Elsevier Ltd 01.10.2011
Springer Singapore
Subjects
4140钢
AISI
AISI 4140
Applied and Technical Physics
Boiling
Chromium molybdenum steels
Computational fluid dynamics
Computer simulation
direct quenching
Engineering
Heat transfer
heat transfer modeling
High strength steels
Iron and steel industry
Machines
Manufacturing
Materials Engineering
Materials Science
Mathematical analysis
Mathematical models
Metallic Materials
moving object
Physical Chemistry
Processes
Steels
传热模拟
强制流动
流动沸腾
电影
直接淬火
计算流体动力学
heat transfer modeling
moving object
AISI 4140
direct quenching
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Summary:The effects of rod falling and moving, external flow field, boiling film and radiation were investigated on fluid flow and heat transfer of AISI 4140 steel horizontal rod during direct quenching by mathematical modeling. The flow field and heat transfer in quenching tank were simulated by computational fluid dynamics (CFD) method considering falling and moving of rods during process. Therefore, modeling of flow field was done by a fixed-mesh method for general moving objects equations, and then, energy equation was solved with a numerical approach so that effect of boiling film heat flux was considered as a source term in energy equation for solid-liquid boundary. Simulated results were verified by comparing with published and experimental data and there was a good agreement between them. Also, the effects of external forced flow and film boiling were investigated on heat flux output, temperature distribution and heat transfer coefficient of rod. Also simulated results determined optimum quenching time for this process.
Bibliography:11-3678/TF
direct quenching; AISI 4140; moving object;heat transfer modeling
The effects of rod falling and moving, external flow field, boiling film and radiation were investigated on fluid flow and heat transfer of AISI 4140 steel horizontal rod during direct quenching by mathematical modeling. The flow field and heat transfer in quenching tank were simulated by computational fluid dynamics （CFD） method considering falling and moving of rods during process. Therefore, modeling of flow field was done by a fixed-mesh method for general moving objects equations, and then, energy equation was solved with a numerical approach so that effeet of boiling film heat flux was considered as a source term in energy equation for solid-liquid boundary. Simulated results were verified by comparing with published and experimental data and there was a good agreement between them. Also, the effects of external forced flow and film boiling were investigated on heat flux output, temperature distribution and heat transfer coefficient of rod. Also simulated results determined optimum quenching time for this process.
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ISSN:1006-706X
2210-3988
DOI:10.1016/S1006-706X(12)60019-3