Abonnement à la biblothèque: Guest
Portail numérique Bibliothèque numérique eBooks Revues Références et comptes rendus Collections
International Journal of Fluid Mechanics Research
ESCI SJR: 0.22 SNIP: 0.446 CiteScore™: 0.5

ISSN Imprimer: 2152-5102
ISSN En ligne: 2152-5110

Volumes:
Volume 46, 2019 Volume 45, 2018 Volume 44, 2017 Volume 43, 2016 Volume 42, 2015 Volume 41, 2014 Volume 40, 2013 Volume 39, 2012 Volume 38, 2011 Volume 37, 2010 Volume 36, 2009 Volume 35, 2008 Volume 34, 2007 Volume 33, 2006 Volume 32, 2005 Volume 31, 2004 Volume 30, 2003 Volume 29, 2002 Volume 28, 2001 Volume 27, 2000 Volume 26, 1999 Volume 25, 1998 Volume 24, 1997 Volume 23, 1996 Volume 22, 1995

International Journal of Fluid Mechanics Research

DOI: 10.1615/InterJFluidMechRes.v40.i1.20
pages 9-26

On Blood Flow in an Artery with an Unsteady Overlapping Stenosis: Mathematical and Computer Modeling

Ranadhir Roy
School of Mathematical and Statistical Sciences, One West University Boulevard, University of Texas Rio Grande Valley, Brownsville, Texas 78520 USA
Daniel N. Riahi
School of Mathematical and Statistical Sciences, One West University Boulevard, University of Texas Rio Grande Valley, Brownsville, Texas 78520 USA

RÉSUMÉ

In this study, we investigate the characteristics of blood flow in an artery with an overlapping unsteady stenosis. Due to the unsteadiness of the stenosis and its boundary effect on the blood flow system, the resulting flow is assumed to be unsteady with the same frequency as the one generated by the unsteady stenosis. The governing equations for the mass conservation and momentum are used for blood flow system, but here the dynamic viscosity of the fluid is a function of the radial variable as modeled by Einstein to take into account the hematocrit. Hematocrit is the percentage of the red cells by volume in the whole blood fluid. Mathematical models and computational codes are developed to determine the leading order flow velocity, pressure gradient, impedance and wall shear stress at the throats and at the critical height of the stenosis. We find that higher values of the frequency, hematocrit, and height of stenosis leads to higher values of the axial velocity, the impedance and the wall shear stress in the stenosis zone.


Articles with similar content:

Unsteady Two-Phase Flow in a Catheterized Artery with Atherosclerosis
International Journal of Fluid Mechanics Research, Vol.42, 2015, issue 4
Daniel N. Riahi, Ranadhir Roy, Jorge Cisneros
Pulsatile Casson Fluid Flow Through a Stenosed Bifurcated Artery
International Journal of Fluid Mechanics Research, Vol.36, 2009, issue 1
Chiu-On Ng, Sachin Shaw, P. V. S. N. Murthy, Rama Subba Reddy Gorla
Unsteady Boundary Layer Flow Due to a Stretching Sheet in a Porous Medium with Partial Slip
Journal of Porous Media, Vol.12, 2009, issue 9
Muhammad Sajid, I. Ahmad
Computation of Viscous Flow Field in a Tapered Artery with an Overlapping Constriction
International Journal of Fluid Mechanics Research, Vol.36, 2009, issue 4
Swati Mukhopadhyay, Gorachand C. Layek, C. Midya
INFLUENCE OF HEAT AND CHEMICAL REACTIONS ON HYPERBOLIC TANGENT FLUID MODEL FOR BLOOD FLOW THROUGH A TAPERED ARTERY WITH A STENOSIS
Heat Transfer Research, Vol.43, 2012, issue 1
Noreen Sher Akbar, Mohamed Ali, Sohail Nadeem