We present a method to construct reduced-order models for duct flows of Bingham media. Our method is based on proper orthogonal decomposition (POD) to find a low-dimensional approximation to the velocity and artificial neural network to approximate the coefficients of a given solution in the constructed POD basis. We use the well-established augmented Lagrangian method and finite-element discretization in the “offline” stage. We show that the resulting approximation has a reasonable accuracy, but the evaluation of the approximate solution is several orders of magnitude times faster.
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