Key result
Flow diverter CFD models vary significantly in fidelity and efficiency for simulating stent hemodynamics.
Why the study?
Proper parameter setup for porous medium CFD models of flow diverter stents is challenging, and the effect of isotropic versus anisotropic assumptions on model accuracy is not well discussed.
This computational study highlights the importance of proper parameter setup in porous medium CFD models for flow diverter stents to accurately capture hemodynamic effects.
CFD model choice affects flow diverter stent simulations; leaves open standardized parameters for clinical translation.
In computational fluid dynamics, there is a high interest in modeling flow diverter stents as porous media due to its reduced computational loads. One of the main difficulties of such models is proper parameter setup. Most authors assume flow diverter's wire screen as an isotropic and homogeneous medium, while others proposes anisotropic configurations, yet very little is discussed about the effect of these assumptions on model's accuracy. In this paper, we compare the effect of different models on hemodynamics in relation to their parameters. The fidelity and efficiency of the different models to capture wire screen effect on fluid flow are quantitatively analyzed and compared.
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Dazeo et al. (2018) studied Flow diverter stents hemodynamics. Porous medium CFD models vs. Different CFD models (isotropic vs anisotropic) was evaluated on Fidelity and efficiency to capture wire screen effect on fluid flow. Different porous medium computational fluid dynamics models for flow diverter stents vary in their fidelity and efficiency to capture wire screen effects on fluid flow.
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