Viscoelastic fluid flow past a confined cylinder: Three-dimensional effects and stability

2014 ◽  
Vol 111 ◽  
pp. 364-380 ◽  
Author(s):  
V.M. Ribeiro ◽  
P.M. Coelho ◽  
F.T. Pinho ◽  
M.A. Alves
Keyword(s):  
Fluid Flow ◽  
Viscoelastic Fluid ◽  
Three Dimensional ◽  
Dimensional Effects ◽  
Flow Past

Three-dimensional effects in laminar flow past a confined cylinder

2012 ◽  
Vol 84 ◽  
pp. 155-169 ◽  
Author(s):  
V.M. Ribeiro ◽  
P.M. Coelho ◽  
F.T. Pinho ◽  
M.A. Alves
Keyword(s):  
Laminar Flow ◽  
Three Dimensional ◽  
Dimensional Effects ◽  
Flow Past

scholarly journals Effect of the contraction ratio upon viscoelastic fluid flow in three-dimensional square–square contractions

2011 ◽  
Vol 66 (5) ◽  
pp. 998-1009 ◽  
Author(s):  
P.C. Sousa ◽  
P.M. Coelho ◽  
M.S.N. Oliveira ◽  
M.A. Alves
Keyword(s):  
Fluid Flow ◽  
Viscoelastic Fluid ◽  
Three Dimensional ◽  
Contraction Ratio

ANALYSIS OF THE EFFECT OF SEWING RING GEOMETRY ON FLUID FLOW PAST BI-LEAFLET MECHANICAL HEART VALVES

2007 ◽  
Vol 19 (02) ◽  
pp. 129-136
Author(s):  
Cheung-Hwa Hsu
Keyword(s):  
Shear Stress ◽  
Fluid Flow ◽  
Heart Valves ◽  
Stokes Equations ◽  
Three Dimensional ◽  
Maximum Flow ◽  
Blood Velocity ◽  
Analysis Model ◽  
Flow Past ◽  
Ring Geometry

This paper concentrates on the effect of sewing ring geometry design on fluid flow past the prototype bi-leaflet aortic valve. To simulate the hemodynamic characteristics of the blood flow, CFX-4.3 software with finite volume method of analyzing the three-dimensional Reynolds-averaged Navier-Stokes equations is adopted. With the analysis model, we predict the blood velocity and the shear stress over the flow filed. The data provide information for the improvement of sewing ring geometry in order to minimize occurrence of hemolysis. An analysis of hemodynamic study for the St. Jude valve with various opening angles is present first and the geometry change is then recommended. After modifying the geometry of the sewing ring, the blood velocity slows down obviously. Maximum flow velocity reduces 54% compared to that of the original St. Jude model at peak systole. On the other hand, shear stress of aortic wall decreases accordingly. This would ease possible damage of endothelial cell of the aorta.

scholarly journals MHD three-dimensional Casson fluid flow past a porous linearly stretching sheet

2013 ◽  
Vol 52 (4) ◽  
pp. 577-582 ◽  
Author(s):  
S. Nadeem ◽  
Rizwan Ul Haq ◽  
Noreen Sher Akbar ◽  
Z.H. Khan
Keyword(s):  
Fluid Flow ◽  
Stretching Sheet ◽  
Three Dimensional ◽  
Casson Fluid ◽  
Flow Past
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