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Keywords: bifurcation
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Journal Articles
Publisher: ASME
Article Type: Research-Article
J Biomech Eng. September 2024, 146(9): 091001.
Paper No: BIO-23-1384
Published Online: April 8, 2024
... deformability can affect blood heat transfer. The heat sink effect in a bifurcated vessel with two asymptotic cases (case 1: deformable and case 2: nondeformable RBCs) is being studied during hyperthermia treatment in a three-dimensional bifurcated vessel, whose wall is being subjected to constant heat flux...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J Biomech Eng. June 2020, 142(6): 061011.
Paper No: BIO-19-1280
Published Online: March 27, 2020
... is modeled as a single-layered, nonlinear, hyperelastic, anisotropic solid, with parameters calibrated from experiment. Linear bifurcation analysis is then performed to predict experimentally measured stability margins. Uncertainties in geometrical parameters and in measured mechanical response were...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J Biomech Eng. October 2019, 141(10): 101012.
Paper No: BIO-18-1513
Published Online: July 29, 2019
... conditions and layer incompatibility. This paper is concerned with the influence of imposed rate (incremental) interface conditions (RICs) on critical loads in soft tissues, within the context of linear bifurcation analysis. Aiming at simplicity, we analyze a model of bilayered isotropic hyperelastic (neo...
Journal Articles
Journal Articles
Journal Articles
Publisher: ASME
Article Type: Research Papers
J Biomech Eng. November 2011, 133(11): 111004.
Published Online: November 28, 2011
... the issue of experimentally validating these calculated deformations, a stereoscopic imaging system utilizing two cameras was constructed to measure model aneurysm displacement in response to pressurization. The three model shapes, consisting of a healthy aorta, an AAA with bifurcation, and an AAA without...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J Biomech Eng. March 2011, 133(3): 031001.
Published Online: February 4, 2011
... aortic aneurysm and a carotid artery bifurcation, and one patient specific problem – a Fontan procedure for congenital heart defects. In each case, relevant hemodynamic features are extracted and their uncertainty is quantified. Uncertainty quantification of the hemodynamic simulations is done using...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J Biomech Eng. December 2010, 132(12): 121008.
Published Online: November 9, 2010
...Yiemeng Hoi; Bruce A. Wasserman; Edward G. Lakatta; David A. Steinman Controversy exists regarding the suitability of fully developed versus measured inlet velocity profiles for image-based computational fluid dynamics (CFD) studies of carotid bifurcation hemodynamics. Here, we attempt to resolve...
Journal Articles
Journal Articles
Journal Articles
Publisher: ASME
Article Type: Research Papers
J Biomech Eng. July 2010, 132(7): 071006.
Published Online: May 26, 2010
... hemodynamics of older adult carotid bifurcations has not been elucidated. Image-based computational fluid dynamics models of N = 9 normal, older adult carotid bifurcations were reconstructed from magnetic resonance angiography. Subject-specific hemodynamics were computed by imposing each individual’s inlet...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J Biomech Eng. March 2010, 132(3): 031005.
Published Online: February 8, 2010
... speed camera. Integration of the particle locations for a large number of cycles provides the probability distribution of particles passing certain branches within the bifurcating network, and thus, the dispersion of particles in the airways. The results show the different characteristics of flow...
Journal Articles
Journal Articles
Publisher: ASME
Article Type: Research Papers
J Biomech Eng. August 2009, 131(8): 081003.
Published Online: June 19, 2009
...Lucy M. O'Keeffe; Gordon Muir; Anna V. Piterina; Tim McGloughlin Atherosclerosis is consistently found in bifurcations and curved segments of the circulatory system, indicating disturbed hemodynamics may participate in disease development. In vivo and in vitro studies have shown that endothelial...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J Biomech Eng. June 2009, 131(6): 061013.
Published Online: May 11, 2009
..., for practical purposes, be considered redundant. Image-based computational fluid dynamics simulations were carried out for N = 50 normal carotid bifurcations reconstructed from magnetic resonance imaging. Pairwise Spearman correlation analysis was performed for HWP quantifying wall shear stress magnitudes...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J Biomech Eng. February 2009, 131(2): 021007.
Published Online: December 10, 2008
... , employing an experimentally validated computer model. The TB tree was geometrically decomposed into triple-bifurcation units with kinematically adjusted multilevel outlet/inlet conditions. Deposition patterns and maximum concentrations differ greatly between nanoparticles ( 1 ⩽ d p ⩽ 150 nm ) and micron...
Journal Articles
Journal Articles
Publisher: ASME
Article Type: Research Papers
J Biomech Eng. February 2008, 130(1): 011015.
Published Online: February 20, 2008
... increase centrifugal forces in the bifurcation to produce more vigorous secondary currents; this supports the argument given by Scherer et al. to explain a higher effective axial diffusivity for inspiration than expiration. Greater cross-section mixing due to four secondary vortices on expiration inhibits...
Journal Articles
Journal Articles
Publisher: ASME
Article Type: Research Papers
J Biomech Eng. February 2008, 130(1): 011010.
Published Online: February 11, 2008
...A. Comerford; M. J. Plank; T. David It is well known that atherosclerosis occurs at very specific locations throughout the human vasculature, such as arterial bifurcations and bends, all of which are subjected to low wall shear stress. A key player in the pathology of atherosclerosis...