Fig. 10From: A DeepONet multi-fidelity approach for residual learning in reduced order modelingRepresentation over the spatial domain of the velocity (along x) in the Navier–Stokes testcase for \(\mu = 69.12\). The approximation computed by POD (0.999 energy threshold), DeepONet, and multi-fidelity DeepONet is shown at the bottom together with the relative error. The distribution of the error is summarized in the box plotBack to article page