About the Numerical Robustness of Biomedical Benchmark Cases: Interlaboratory FDA's Idealized Medical Device

Abstract : The need for reliable approaches in numerical simulations stands out as a critical issue for the development and optimization of cardiovascular biomedical devices. This led the United States Food and Drug Administration to undertake a program of validation of computational fluid dynamics methods for transitional and turbulent flows. In the current investigation, large-eddy simulation is used to simulate the flow in the first benchmark medical device and results are confronted to the existing laboratory experiments. This idealized medical device has the particularity to feature transition to turbulence after a sudden expansion. The effects of numerical parameters and low-level inlet perturbations are investigated. Results indicate a considerable impact of numerical aspects on the prediction of the location of the transition to turbulence. The study also demonstrates that injecting small perturbations at the inflow greatly improves the streamwise velocity estimation in the transition region and substantially contributes to the robustness of the flow statistical data.
Complete list of metadatas

Cited literature [38 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-01290017
Contributor : Franck Nicoud <>
Submitted on : Saturday, April 2, 2016 - 2:25:42 PM
Last modification on : Tuesday, May 28, 2019 - 1:54:03 PM
Long-term archiving on : Sunday, July 3, 2016 - 12:14:08 PM

File

Zmijanovic2016.pdf
Files produced by the author(s)

Identifiers

Citation

Vladeta Zmijanovic, Simon Mendez, Vincent Moureau, Franck Nicoud. About the Numerical Robustness of Biomedical Benchmark Cases: Interlaboratory FDA's Idealized Medical Device. International Journal for Numerical Methods in Biomedical Engineering, John Wiley and Sons, 2017, 33 (1), pp.e02789. ⟨10.1002/cnm.2789⟩. ⟨hal-01290017⟩

Share

Metrics

Record views

222

Files downloads

509