In recent years the methods of computational fluid dynamics (CFD) have been applied to the human cardiovascular system to better understand the relationship between arterial blood flow and the disease process. Obviously, the technical challenges associated with such modeling are formidable. Among the many problems to be addressed, in this paper we add yet another complication — the known non-Newtonian nature of blood. Due to the preliminary nature of the study, we limit ourselves to a generic and idealized geometry — a simple standard bifurcation of a tube with rigid walls. The pulsatile nature of the flow is considered. We use the Carreau-Yasuda model to describe the non-Newtonian viscosity variation. Preliminary results are presented for the Newtonian and non-Newtonian cases, at mean Reynolds number of 340, averaged over the cardiac cycle. The broad fundamental issue we wish to eventually resolve is whether or not non-Newtonian effects in blood flow are sufficiently strong that they must be addressed in meaningful simulations. Interesting differences during the flow cycle shed light on the problem, but further research is needed.
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ASME 2008 Summer Bioengineering Conference
June 25–29, 2008
Marco Island, Florida, USA
Conference Sponsors:
- Bioengineering Division
ISBN:
978-0-7918-4321-5
PROCEEDINGS PAPER
Non-Newtonian Study of Blood Flow in a Bifurcation With a Stabilized Finite Element Method
Victor L. Marrero,
Victor L. Marrero
Rensselaer Polytechnic Institute, Troy, NY
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John A. Tichy,
John A. Tichy
Rensselaer Polytechnic Institute, Troy, NY
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Kenneth E. Jansen
Kenneth E. Jansen
Rensselaer Polytechnic Institute, Troy, NY
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Victor L. Marrero
Rensselaer Polytechnic Institute, Troy, NY
John A. Tichy
Rensselaer Polytechnic Institute, Troy, NY
Kenneth E. Jansen
Rensselaer Polytechnic Institute, Troy, NY
Paper No:
SBC2008-192516, pp. 323-324; 2 pages
Published Online:
March 13, 2014
Citation
Marrero, VL, Tichy, JA, & Jansen, KE. "Non-Newtonian Study of Blood Flow in a Bifurcation With a Stabilized Finite Element Method." Proceedings of the ASME 2008 Summer Bioengineering Conference. ASME 2008 Summer Bioengineering Conference, Parts A and B. Marco Island, Florida, USA. June 25–29, 2008. pp. 323-324. ASME. https://doi.org/10.1115/SBC2008-192516
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