High order finite element simulations for fluid dynamics validated by experimental data from the FDA benchmark nozzle model

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The objective of the present work is to construct a sound mathematical, numerical and computational framework relevant to blood flow simulations and to assess it through a careful validation against experimental data. We perform simulations of a benchmark proposed by the FDA for fluid flow in an idealized medical device, under different flow regimes. The results are evaluated using metrics proposed in the literature and the findings are in very good agreement with the validation experiment.

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We have run the FDA nozzle benchmark and report here some of our results. We considered the regimes Re=500,2000,3500 and got good agreement with experimental data. High order geometry helps : it allows to recover good results with respect to experiments even in the case of really coarse mesh and low order FE for velocity and pressure.