Research Article

Uncertainty and Sensitivity Studies with TRACE-SUSA and TRACE-DAKOTA by Means of Steady State BFBT Data

Table 6

Sensitivity coefficients for the two-phase flow pressure drop.

Case (P600x)Outlet pressureMass flow rateInlet temperatureWall roughness -spacerHydraulic diameterPower

010.1890.212−0.645−0.0130.387−0.486−0.040
−0.3910.3220.8020.3140.0020.029
08−0.1840.2630.4060.0550.342−0.7000.126
−0.3960.2870.6720.0870.5090.013
14−0.1970.2520.4470.0580.328−0.6780.131
−0.3940.2720.7300.0610.4080.232
20−0.1580.2450.3080.0440.331−0.7500.181
−0.4130.2840.6410.0860.4850.334
220.2020.203−0.653−0.0170.390−0.479−0.033
−0.2800.2500.8650.0300.2630.098
30−0.1930.2500.4000.0560.338−0.7010.149
−0.4450.2690.6460.0700.5020.294