Key result
A three-dimensional computer model using the transitional k-omega model showed that mild stenosis produces higher turbulent viscosity, whereas severe stenosis causes stronger recirculation and higher vorticity.
The transitional k-omega model effectively captures complex hemodynamic changes, such as turbulence and recirculation, in varying degrees of carotid artery stenosis.
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Transitional k-omega preferred for stenotic flow modeling; leaves open bifurcation validation before clinical use.
Banks et al. (2006) studied Carotid artery bifurcation stenosis. Transitional k-omega turbulence model vs. RNG k-epsilon model was evaluated on Turbulence intensity, turbulent viscosity, velocity, vorticity, helicity, and wall shear stress. A three-dimensional computer model using the transitional k-omega model showed that mild stenosis produces higher turbulent viscosity, whereas severe stenosis causes stronger recirculation and higher vorticity.
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