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.
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e-mail: frankel@ecn.purdue.edu
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August 2003
Technical Papers
Numerical Modeling of Pulsatile Turbulent Flow in Stenotic Vessels
Sonu S. Varghese,
Sonu S. Varghese
School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907
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Steven H. Frankel
e-mail: frankel@ecn.purdue.edu
Steven H. Frankel
School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907
11
Search for other works by this author on:
Sonu S. Varghese
School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907
Steven H. Frankel
11
School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907
e-mail: frankel@ecn.purdue.edu
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.
J Biomech Eng. Aug 2003, 125(4): 445-460 (16 pages)
Published Online: August 1, 2003
Article history
Received:
January 28, 2002
Revised:
February 10, 2003
Online:
August 1, 2003
Citation
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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