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TURBULENCE MODELING IN STENOSED CAROTID ARTERIES USING CFD

Pages: 83 – 90

Ibrahim Mustafa1, Shagufta Ishtiaque2, X.Y. Xu3 and N.B. Wood

Abstract:

Various numerical simulations of blood flow through stenosed (partially blocked) carotid arteries have been performed in the past but most of them have been limited to laminar flow. It has been reported in the literature that stenosis may promote disturbed flow causing transition from laminar to turbulence [1]. The studies on turbulence development in the post-stenotic regions are rare and have been performed by using only one or two turbulence models. In this work several turbulence models were used and validated against experimental data by using CFD (Computational Fluid Dynamics) package Fluent 6.1. A stenosed geometry of 75% area reduction was used in the simulation. It was found that SST (Shear Stress Transport) k-w model gave the best agreement with experimental data for Reynolds Number of 5000. We also analyzed the models at even lower Reynolds Number of 2000 and found that SST k-w model performed consistently better.

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