How Does Temperature Affect the Thermal Conductivity of UO2?

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Discussion Overview

The discussion centers on the thermal conductivity of UO2 (uranium dioxide) as a function of temperature, with participants seeking data and methods for calculating average thermal conductivity across a temperature range. Related inquiries about Zircaloy-4 properties are also present, indicating a broader interest in materials used in nuclear applications.

Discussion Character

  • Exploratory
  • Technical explanation
  • Homework-related

Main Points Raised

  • One participant proposes a method for calculating the average thermal conductivity of UO2 using an integral approach, requesting data on thermal conductivity as a function of temperature.
  • Another participant inquires about the melting temperature of Zircaloy-4, indicating a potential interest in its thermal properties.
  • A third participant provides links to resources containing thermophysical properties of materials relevant to light-water reactors, including UO2 and Zircaloy-4.
  • Several participants express gratitude for the shared resources, indicating their usefulness for further research.
  • One participant asks about accessing the FRAPCON 3.4 code for calculating fuel crack models, suggesting a need for computational tools in their analysis.

Areas of Agreement / Disagreement

The discussion includes multiple inquiries and shared resources, but no consensus is reached on specific values or models regarding the thermal conductivity of UO2 or the melting point of Zircaloy-4. Participants have varying focuses, with some discussing UO2 while others shift to Zircaloy-4 and computational tools.

Contextual Notes

Participants reference various resources and databases for material properties, but the discussion lacks specific measured data or established relationships for UO2's thermal conductivity across temperature ranges. The inquiries about Zircaloy-4 and computational tools suggest a broader context of nuclear materials research.

Who May Find This Useful

This discussion may be useful for researchers and students interested in the thermal properties of nuclear materials, particularly UO2 and Zircaloy-4, as well as those seeking computational methods for analyzing fuel behavior in reactors.

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I want to calculate the average thermal conductivity of UO2 by :

1/(To-Tf) * ∫To->Tf dT K(T)

any one can provide me anything about the thermal conductivity of UO2 as function of temperature or any measured data in a range of temperature.
 
Engineering news on Phys.org
Zircaloy-4 melting point

what is the melting temperature of Zircaloy-4 ?
..
 
Look here for thermophysical properties of LWR fuel and core component materials.

Volume 4: MATPRO- A Library of Materials Properties for Light-Water-Reactor Accident Analysis
http://www.inl.gov/relap5/scdap/smanuals.htm (Vol 4)
Describes the material property library, MATPRO. This library contains material property subroutines available for accident analysis.

Download the pdf (Vol 4).

See also the FRAPCON 3.4 manual for the latest material properties.
http://www.nrc.gov/reading-rm/doc-collections/nuregs/contract/cr7022/
http://www.nrc.gov/reading-rm/doc-collections/nuregs/contract/cr7024/

It has some Zircaloy-4 properties as well.

See also -
IAEA TECDOC-1496. Thermophysical properties database of materials for light water reactors and heavy water reactors.
http://www-pub.iaea.org/MTCD/publications/PDF/te_1496_web.pdf

and the older TECDOC-949. Thermophysical properties of materials for water cooled reactors.
http://www-pub.iaea.org/MTCD/publications/PDF/te_949_prn.pdf
 
Last edited:
Thank you very much that helped a lot. :)
 
tank's Astronuc
it's so useful for me too;
How can access to FRAPCON 3.4 code for calculation fuel crack models?
 
sh_saeed said:
tank's Astronuc
it's so useful for me too;
How can access to FRAPCON 3.4 code for calculation fuel crack models?
As far as I know, the code is available through the US NRC and Pacific Northwest National Laboratory.

Try this - http://frapcon.labworks.org/
 
Last edited:

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