Calculation of Lattice Thermal Conductivity of UO 2+0.25 by Solving Phonon Boltzmann Equation
، صفحه 0-0 (1)
اصل مقاله (260.2 K)
عنوان دوره: اولین دوره بین المللی و بیست و هشتمین دوره ملی (1400)
نویسندگان
چکیده
The lattice thermal conductivity of UO2 and UO 2+0.25 is investigated by the relaxation time approximation
solution of the Boltzmann transport equation for the steady-state phonon distribution function. To do this,
we have calculated the 2 nd and 3 rd IFCs with finite displacement method. Results show that thermal
conductivity of UO 2+0.25 is decreased by adding oxygen defects. The reason behind the decreasing the
thermal conductivity is the increasing of scattering rate by defects.
solution of the Boltzmann transport equation for the steady-state phonon distribution function. To do this,
we have calculated the 2 nd and 3 rd IFCs with finite displacement method. Results show that thermal
conductivity of UO 2+0.25 is decreased by adding oxygen defects. The reason behind the decreasing the
thermal conductivity is the increasing of scattering rate by defects.
کلیدواژه ها
Uranium Dioxide؛ Density functional theory؛ Lattice Thermal Conductivity؛ Phonon Boltzmann Equation (BTE)؛ Relaxation Time Approximation؛ Hubbard Correction
مراجع
<p>-1</p>