OECD/NRC PSBT Benchmark: Investigating the CATHARE2 Capability to Predict Void Fraction in PWR Fuel Bundle

Table 4

PSBT subchannel tests, CATHARE2: summary of sensitivity analysis results.

Void fraction	TS 1			TS 2			TS 3			TS 4
	⟨𝜀[𝛼]⟩	𝜎[𝜀]	Number	⟨𝜀[𝛼]⟩	𝜎[𝜀]	Number	⟨𝜀[𝛼]⟩	𝜎[𝜀]	Number	⟨𝜀[𝛼]⟩	𝜎[𝜀]	Number
RUN1 (refrence)	−𝟎.𝟎𝟐𝟏	0.0471	43	−𝟎.𝟎𝟏𝟔	0.0510	43	−𝟎.𝟎𝟑𝟎	0.0603	20	−𝟎.𝟎𝟓𝟒	0.0334	20
RUN2	−0.006	0.0489	43	−0.005	0.0493	43	−0.018	0.0617	20	0.044	0.0281	20
RUN3	−0.036	0.0474	43	−0.027	0.0537	43	−0.041	0.0610	20	−0.063	0.0402	20
RUN4	−0.010	0.0434	43	−0.006	0.0472	43	−0.019	0.0577	20	−0.043	0.0279	20
RUN5	−0.032	0.0512	43	−0.029	0.0534	43	−0.040	0.0637	20	−0.063	0.0391	20
RUN6	−0.018	0.0475	43	−0.014	0.0503	43	−0.028	0.0606	20	−0.052	0.0321	20
RUN7	−0.005	0.0500	43	−0.004	0.0488	43	−0.017	0.0622	20	−0.044	0.0276	20