9.5. Nomenclature¶
Symbol |
Description |
Units |
|---|---|---|
\(A\) |
Variable or constant in TDC-2 correlation |
|
\(B\) |
Variable or constant in TDC-2 correlation |
|
\(C\) |
Variable or constant in TDC-2 correlation |
|
\(D\) |
Constant in TDC-2 correlation |
|
\(E\) |
Constant in TDC-2 correlation |
|
\(F\) |
Constant in TDC-2 correlation |
|
\(m\) |
Stress exponent |
|
\(P\) |
Internal fuel element pressure |
Pa |
\(P_{\text{ch}}\) |
Coolant channel pressure |
Pa |
\(\frac{Q}{R}\) |
Creep activation temperature |
K |
\(Q_{1}\) |
Constant in TDC-2 correlation |
|
\(\dot{r}\) |
Penetration rate |
m/s |
\(t_{\text{r}}\) |
Time to rupture in TDC-2 correlation |
hrs,s |
\(T\) |
Cladding temperature |
K |
\(\dot{T}\) |
Temperature rate of change |
K/s |
\(\text{TI}\) |
Irradiation temperature in TDC-2 correlation |
K |
\(\dot{\epsilon}\) |
Equivalent strain rate |
1/s |
\({\dot{\epsilon}}_{\text{oos}}\) |
Material constant |
1/s |
\(\phi\) |
Variable in TDC-2 correlation |
|
\(\sigma\) |
Equivalent stress |
Pa |
\(\sigma\) |
Hoop stress in TDC-2 correlation |
MPa |
\(\sigma_{\text{so}}\) |
Saturation stress |
Pa |
\(\sigma_{\theta}\) |
Hoop stress |
Pa |
\(\sigma^{*}\) |
Fitting coefficient in TDC-2 correlation |
MPa |
\(\phi t\) |
Fast fluence in TDC-2 correlation |
1022n/cm2 |