Yıl 2017, Cilt 41, Sayı 2, 113 - 123, 01.04.2017

### Effect of Pu content on uncertainty in reactor parameters due to use of no temperature gradient in (U-Pu)O$_{2}$ fuels

Yıl 2017, Cilt 41, Sayı 2, 113 - 123, 01.04.2017

### Öz

Radial temperature distribution in a fuel rod is a parabolic function. Neutronics calculations are in general performed over a volume-averaged temperature by ignoring this distribution. Such an assumption results in an uncertainty in reactor design parameters. In this study, the magnitude of this uncertainty is estimated by solving the heat equation with a temperature-dependent conductivity coefficient coupled with a reactor physics code. The effect of radial fuel temperature distribution is investigated by representing the fuel region as multiregional. Uncertainty is investigated for various Pu contents of (U-Pu)O$_{2}$ fuel, a mix of depleted U and reactor-grade Pu. The effect of Pu content on the uncertainty is studied. The PWR TMI-1 unit cell case from UAM test problems is used in the calculations. Results are obtained by using the discrete ordinate method. From the results, it was observed that uncertainties in reactor parameters ($k_{\infty }$ and Doppler coefficient) due to the use of no temperature gradient and in $k_{\infty }$ due to cross-sections decrease as Pu content increases. Moreover, it was calculated that uncertainty due to uniform temperature inside the nuclear fuel is about 7% of uncertainty due to cross-sections.

### Ayrıntılar

Bölüm Makaleler Mehmet TÜRKMEN Bu kişi benim 1 Nisan 2017 Yıl 2017, Cilt 41, Sayı 2

### Kaynak Göster

 Bibtex @ { tbtkphysics401893, journal = {Turkish Journal of Physics}, issn = {1300-0101}, eissn = {1303-6122}, address = {}, publisher = {TÜBİTAK}, year = {2017}, volume = {41}, number = {2}, pages = {113 - 123}, title = {Effect of Pu content on uncertainty in reactor parameters due to use of no temperature gradient in (U-Pu)O\$\_\{2\}\$ fuels}, key = {cite}, author = {Türkmen, Mehmet} } APA Türkmen, M. (2017). Effect of Pu content on uncertainty in reactor parameters due to use of no temperature gradient in (U-Pu)O$_{2}$ fuels . Turkish Journal of Physics , 41 (2) , 113-123 . Retrieved from https://dergipark.org.tr/tr/pub/tbtkphysics/issue/35850/401893 MLA Türkmen, M. "Effect of Pu content on uncertainty in reactor parameters due to use of no temperature gradient in (U-Pu)O$_{2}$ fuels" . Turkish Journal of Physics 41 (2017 ): 113-123 Chicago Türkmen, M. "Effect of Pu content on uncertainty in reactor parameters due to use of no temperature gradient in (U-Pu)O$_{2}$ fuels". Turkish Journal of Physics 41 (2017 ): 113-123 RIS TY - JOUR T1 - Effect of Pu content on uncertainty in reactor parameters due to use of no temperature gradient in (U-Pu)O$_{2}$ fuels AU - MehmetTürkmen Y1 - 2017 PY - 2017 N1 - DO - T2 - Turkish Journal of Physics JF - Journal JO - JOR SP - 113 EP - 123 VL - 41 IS - 2 SN - 1300-0101-1303-6122 M3 - UR - Y2 - 2022 ER - EndNote %0 Turkish Journal of Physics Effect of Pu content on uncertainty in reactor parameters due to use of no temperature gradient in (U-Pu)O$_{2}$ fuels %A Mehmet Türkmen %T Effect of Pu content on uncertainty in reactor parameters due to use of no temperature gradient in (U-Pu)O$_{2}$ fuels %D 2017 %J Turkish Journal of Physics %P 1300-0101-1303-6122 %V 41 %N 2 %R %U ISNAD Türkmen, Mehmet . "Effect of Pu content on uncertainty in reactor parameters due to use of no temperature gradient in (U-Pu)O$_{2}$ fuels". Turkish Journal of Physics 41 / 2 (Nisan 2017): 113-123 . AMA Türkmen M. Effect of Pu content on uncertainty in reactor parameters due to use of no temperature gradient in (U-Pu)O$_{2}$ fuels. Turkish Journal of Physics. 2017; 41(2): 113-123. Vancouver Türkmen M. Effect of Pu content on uncertainty in reactor parameters due to use of no temperature gradient in (U-Pu)O$_{2}$ fuels. Turkish Journal of Physics. 2017; 41(2): 113-123. IEEE M. Türkmen , "Effect of Pu content on uncertainty in reactor parameters due to use of no temperature gradient in (U-Pu)O$_{2}$ fuels", Turkish Journal of Physics, c. 41, sayı. 2, ss. 113-123, Nis. 2017
• Makale Dosyaları