Transient Thermal Characteristics of UO<SUB>2</SUB> Fuel Rods

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概要

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• Transient characteristics of average temperature and heat flux of UO<SUB>2</SUB> fuel rods have been obtained with account taken of the effect of temperature dependence of thermal properties. The first order deviation of the temperature distribution inside the fuel rod is solved by modal expan-sion, and the coefficients and time constants obtained for the transfer functions. The results have been compared with those by the conventional method: the differences found as a result in the transfer functions for typical fuel rods are within 1 dB in gain and 5 degrees in phase when the volume-averaged fuel temperature is used in the conventional method.

• 一般社団法人 日本原子力学会の論文

著者

• NAGAI Masayuki

  Ozenji Division, Hitachi Central Research Laboratory

• KAWAI Toshio

  Ozenji Division, Central Research Laboratory, Hitachi Ltd., Ozenji, Kawasaki-shi,Kanagawa-ken.

• HORI Masae

  Ozenji Division, Hitachi Central Research Laboratory

関連論文

• Transient Thermal Characteristics of UO2 Fuel Rods

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