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Keywords: pulsatile flow
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Journal Articles
Article Type: Research-Article
J Biomech Eng. June 2019, 141(6): 061001.
Paper No: BIO-17-1599
Published Online: April 22, 2019
... 12 2017 23 03 2019 aneurysm turbulence computational fluid dynamics pulsatile flow vortex ring recirculation region oscillatory shear index An aneurysm refers to the localized dilation or bulging of a blood vessel. Aneurysms can form in any blood vessel, but the cerebral...
Journal Articles
Article Type: Research Papers
J Biomech Eng. December 2011, 133(12): 121005.
Published Online: December 23, 2011
...; a single bifurcation tube; and a simple arterial network with four bifurcations. Soft polyurethane tubes were used and the configuration was based on a realistic human arterial network. The tensile modulus of the material was similar to the elasticity of arteries. A pulsatile flow with ejection time 0.3 s...
Journal Articles
Article Type: Research Papers
J Biomech Eng. October 2011, 133(10): 101002.
Published Online: October 31, 2011
... magnifications can be useful in moving towards better prediction of thrombosis in LVADs. 15 06 2011 29 08 2011 31 10 2011 31 10 2011 biomedical equipment blood flow measurement cardiology flow visualisation friction kinematics pulsatile flow shear flow viscosity...
Journal Articles
Article Type: Research Papers
J Biomech Eng. September 2011, 133(9): 091005.
Published Online: October 11, 2011
... 2011 11 10 2011 11 10 2011 biochemistry biological fluid dynamics bioreactors bone cellular biophysics foams macromolecules molecular biophysics orthopaedics porous materials proteins pulsatile flow tissue engineering mesenchymal stem cells PLGA pulsatile perfusion...
Journal Articles
Article Type: Research Papers
J Biomech Eng. June 2011, 133(6): 061008.
Published Online: July 5, 2011
... and in predicting the tissue general response. 14 12 2010 13 05 2011 17 05 2011 05 07 2011 05 07 2011 biomechanics blood vessels haemodynamics physiological models pulsatile flow Arteries function as conduits responsible for transport of blood to respective tissues...
Journal Articles
Article Type: Research Papers
J Biomech Eng. June 2011, 133(6): 061007.
Published Online: June 28, 2011
... the actual valve model. Dynamic shear stresses were then obtained by applying the techniques on the valve model in a physiologic pulsatile flow loop. Results show that aortic surface shear stresses are low during early systole (<5dyn/cm 2 ) but elevated to its peak during mid to late systole at about 18...
Journal Articles
Article Type: Research Papers
J Biomech Eng. May 2011, 133(5): 051001.
Published Online: April 7, 2011
... the best overall agreement. The present study demonstrated the power of LES methods, although they were computationally more costly, and added further evidence of the promise of the RANS transition model used here, previously tested in pulsatile flow on a similar model. Both dynamic Smagorinsky LES...
Journal Articles
Article Type: Research Papers
J Biomech Eng. November 2010, 132(11): 111009.
Published Online: October 27, 2010
... fluid dynamics pulsatile flow Intracranial aneurysm is a life-threatening disease in which a brain artery could enlarge permanently or even rupture. An important goal for clinical practice is to be able to quantify the likelihood of aneurysm rupture after it is diagnosed in a patient. However...
Journal Articles
Article Type: Research Papers
J Biomech Eng. November 2010, 132(11): 111005.
Published Online: October 15, 2010
...Iman Borazjani; Fotis Sotiropoulos We carry out three-dimensional high-resolution numerical simulations of a bileaflet mechanical heart valve under physiologic pulsatile flow conditions implanted at different orientations in an anatomic aorta obtained from magnetic resonance imaging (MRI...
Journal Articles
Article Type: Technical Briefs
J Biomech Eng. October 2010, 132(10): 104502.
Published Online: September 27, 2010
... biological tissues cardiovascular system diseases finite element analysis flow simulation haemodynamics permeability physiological models pulsatile flow aneurysm porohyperelastic permeability finite element model Abdominal aortic aneurysms (AAAs) are a progressive dilatation...
Journal Articles
Article Type: Technical Briefs
J Biomech Eng. May 2010, 132(5): 054502.
Published Online: March 25, 2010
... static pressure loading and pulsatile flow. The stent shows good dynamic behavior in keeping position imposed at implantation time and in matching the aortic root dimensions changes. Prosthesis static and dynamic regurgitation are evaluated and show values close to those obtained with other commercially...
Topics: Stents, Valves
Journal Articles
Article Type: Research Papers
J Biomech Eng. March 2010, 132(3): 031009.
Published Online: February 17, 2010
.... These regions are found to vary, depending on the percentage of the flow bypass. 13 04 2009 20 10 2009 22 12 2009 17 02 2010 17 02 2010 blood vessels finite volume methods flow simulation fluid oscillations haemodynamics jets paediatrics prosthetics pulsatile flow shear...
Journal Articles
Article Type: Research Papers
J Biomech Eng. March 2010, 132(3): 031010.
Published Online: February 17, 2010
... layer turbulence flow separation flow visualisation fluid oscillations haemodynamics laminar flow laminar to turbulent transitions pulsatile flow time resolved DPIV arterial stenosis transition coronary flow peripheral flow phase angle Cardiovascular diseases (CVDs...
Journal Articles
Article Type: Research Papers
J Biomech Eng. November 2009, 131(11): 111005.
Published Online: October 16, 2009
... for both anastomotic configurations, although its long-term effect on the flow splitting remains unknown. A large increase in wall shear stress is found near the cannulation sites during the LVAD support. This work builds a foundation for more physiologically realistic simulations under pulsatile flow...
Journal Articles
Article Type: Research Papers
J Biomech Eng. October 2009, 131(10): 101011.
Published Online: September 10, 2009
... biomedical optical imaging blood vessels elasticity haemodynamics optical microscopy proteins pulsatile flow pulsatile pressure internal elastic lamina collagen fibronectin connexin 43 porcine artery ex vivo organ culture Arteries are subjected to pulsatile blood flows...
Journal Articles
Article Type: Research Papers
J Biomech Eng. October 2009, 131(10): 101004.
Published Online: September 1, 2009
..., and smooth muscle cells can validate and improve the introduced hypotheses of the model. 28 11 2008 11 05 2009 01 09 2009 blood pressure measurement blood vessels cellular biophysics mathematical analysis molecular biophysics muscle proteins pulsatile flow shear flow...
Journal Articles
Article Type: Research Papers
J Biomech Eng. September 2009, 131(9): 091004.
Published Online: August 4, 2009
...Carolyn Fisher; Jenn Stroud Rossmann Blood flow dynamics near and within cerebral aneurysms have long been implicated in aneurysm growth and rupture. In this study, the governing equations for pulsatile flow are solved in their finite volume formulation to simulate blood flow in a range of three...
Journal Articles
Article Type: Research Papers
J Biomech Eng. September 2009, 131(9): 091001.
Published Online: August 4, 2009
... the characteristics of pulsatile flow in and around two “patient-specific” intracranial aneurysms at three different cardiac frequencies. Three dimensional X-ray angiographic data (3D-DSA) were used to reconstruct accurate and patient-specific aneurysm geometries. Then, computational fluid dynamics techniques were...
Journal Articles
Article Type: Research Papers
J Biomech Eng. June 2009, 131(6): 061010.
Published Online: May 5, 2009
... rupture predictions. 23 08 2008 21 01 2009 05 05 2009 bending biomechanics biomedical MRI blood vessels cardiology finite element analysis haemodynamics pulsatile flow stress-strain relations coronary artery cardiovascular cyclic bending fluid-structure interaction...
Journal Articles
Article Type: Research Papers
J Biomech Eng. June 2009, 131(6): 061006.
Published Online: April 27, 2009
... fluid dynamics simulations under pulsatile flow conditions. A flat rectangular stented vessel model was constructed and simulations were carried out using rigid walls and sinusoidal velocity input (nominal wall shear stress of 10 ± 5 dyn / cm 2 ). Mesh independence was determined from convergence...