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

Table 4

Sensitivity coefficients for the single-phase flow pressure drop.

Case (P700x)	Outlet pressure	Mass flow rate	Inlet temperature	Wall roughness	𝐾-spacer	Hydraulic diameter
02	0.143	0.281	−0.240	−0.106	0.539	−0.749
	0.030	0.550	0.045	0.076	0.836	—
07	0.152	0.283	−0.229	−0.131	0.570	−0.747
	0.007	0.506	0.003	−0.008	0.859	—
13	0.138	0.287	−0.184	−0.081	0.585	−0.754
	0.045	0.636	−0.113	−0.029	0.764	—
16	0.150	0.285	−0.174	−0.093	0.603	−0.751
	0.044	0.851	−0.200	−0.022	0.476	—
30	0.154	0.284	−0.135	−0.108	0.614	−0.749
	−0.022	0.510	−0.062	0.024	0.849	—
35	0.152	0.282	−0.129	−0.112	0.624	−0.747
	0.434	0.393	−0.240	−0.001	0.645	—