Journal article
Numerical Studies of Three-Dimensional Arterial Flows in Reverse Curvature Geometry: Part I—Peak Flow
Journal of biomechanical engineering, v 115(3), pp 316-326
01 Aug 1993
PMID: 8231148
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
A three-dimensional flow simulation at Repeak = 192 and 580 was made in a smooth reverse curvature model that conformed to the gentle “S” shape from a human left femoral artery angiogram. The objective of this numerical investigation was to find the changes in pressure, shear stress, velocity profile, and particle path occurring in the double-curved arterial vessel. Due to the impingement of blood at the outer wall in the first bend region, the wall shear stress approached 40 dyne/cm2—a value over twice as large as in the straight upstream segment. Conversely, at the inner wall in the first bend, a low shear stress region was found where the value of the shear stress was consistently smaller than that in the straight section. The initiation of centrifugal effects caused by the first bend could clearly be seen at Repeak = 580, but due to the close proximity of the reverse curvature segment, the momentum effect due to the second bend overshadowed the centrifugal effect. Hence, only near the end of the second bend did the centrifugal effect due to the second bend result in a double-spiral-secondary motion. In addition, the numerically calculated pressure drop data were in agreement with prior experimental values.
Metrics
Details
- Title
- Numerical Studies of Three-Dimensional Arterial Flows in Reverse Curvature Geometry: Part I—Peak Flow
- Creators
- R. K Banerjee - Department of Mechanical Engineering and Mechanics; Drexel University; Philadelphia PA 19104Y. I Cho - Drexel UniversityL. H Back - Jet Propulsion Lab
- Publication Details
- Journal of biomechanical engineering, v 115(3), pp 316-326
- Publisher
- ASME
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Mechanical Engineering and Mechanics
- Web of Science ID
- WOS:A1993LU76600016
- Scopus ID
- 2-s2.0-0027641740
- Other Identifier
- 991019173998404721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Biophysics
- Engineering, Biomedical