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PCE emulator and sensitivity indices convergence analysis in the patient-specific CFD model – (a) relative error and (b) first-order Sobol indices for each PCE order across 5 runs. Element-wise data are shown in the fringe plots and summarized in the graphs. For conciseness, only first-order Sobol indices across the computational domain are presented for viscosity, but the others also demonstrated stability as illustrated in the bar graphs.
