Pulsatile turbulent flow in stenotic vessels has been numerically modeled using the Reynolds-averaged Navier-Stokes equation approach. The commercially available computational fluid dynamics code (CFD), FLUENT, has been used for these studies. Two different experiments were modeled involving pulsatile flow through axisymmetric stenoses. Four different turbulence models were employed to study their influence on the results. It was found that the low Reynolds number turbulence model was in much better agreement with previous experimental measurements than both the low and high Reynolds number versions of the RNG (renormalization-group theory) turbulence model and the standard model, with regard to predicting the mean flow distal to the stenosis including aspects of the vortex shedding process and the turbulent flow field. All models predicted a wall shear stress peak at the throat of the stenosis with minimum values observed distal to the stenosis where flow separation occurred.
Numerical Modeling of Pulsatile Turbulent Flow in Stenotic Vessels
Contributed by the Bioengineering Division for publication in the JOURNAL OF BIOMECHANICAL ENGINEERING. Manuscript received by the Bioengineering Division January 28, 2002; revision received February 10, 2003. Associate Editor: J. E. Moore, Jr.
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Varghese , S. S., and Frankel, S. H. (August 1, 2003). "Numerical Modeling of Pulsatile Turbulent Flow in Stenotic Vessels ." ASME. J Biomech Eng. August 2003; 125(4): 445–460. https://doi.org/10.1115/1.1589774
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