scholarly journals Morphotype-Dependent Flow Characteristics in Bicuspid Aortic Valve Ascending Aortas: A Benchtop Particle Image Velocimetry Study

2017 ◽  
Vol 8 ◽  
Author(s):  
Andrew McNally ◽  
Ashish Madan ◽  
Philippe Sucosky
Keyword(s):  
Particle Image Velocimetry ◽  
Aortic Valve ◽  
Bicuspid Aortic Valve ◽  
Particle Image ◽  
Flow Characteristics ◽  
Image Velocimetry ◽  
Dependent Flow ◽  
Particle Image Velocimetry Study

In Vitro Characterization of Bicuspid Aortic Valve Hemodynamics Using Particle Image Velocimetry

2012 ◽  
Vol 40 (8) ◽  
pp. 1760-1775 ◽  
Author(s):  
Neelakantan Saikrishnan ◽  
Choon-Hwai Yap ◽  
Nicole C. Milligan ◽  
Nikolay V. Vasilyev ◽  
Ajit P. Yoganathan
Keyword(s):  
Particle Image Velocimetry ◽  
Aortic Valve ◽  
Bicuspid Aortic Valve ◽  
Particle Image ◽  
In Vitro Characterization ◽  
Image Velocimetry

scholarly journals Erratum to: In Vitro Characterization of Bicuspid Aortic Valve Hemodynamics Using Particle Image Velocimetry

2012 ◽  
Vol 40 (8) ◽  
pp. 1776-1776
Author(s):  
Neelakantan Saikrishnan ◽  
Choon-Hwai Yap ◽  
Nicole C. Milligan ◽  
Nikolay V. Vasilyev ◽  
Ajit P. Yoganathan
Keyword(s):  
Particle Image Velocimetry ◽  
Aortic Valve ◽  
Bicuspid Aortic Valve ◽  
Particle Image ◽  
In Vitro Characterization ◽  
Image Velocimetry

Particle Image Velocimetry Study of Flow near Trashrack Models

2009 ◽  
Vol 135 (8) ◽  
pp. 671-684 ◽  
Author(s):  
Jonathan M. Tsikata ◽  
Mark F. Tachie ◽  
Chris Katopodis
Keyword(s):  
Particle Image Velocimetry ◽  
Particle Image ◽  
Image Velocimetry ◽  
Particle Image Velocimetry Study

Flow Characteristics of Pressure-Driven Water in Serpentine Micro-Channels

2006 ◽  
Author(s):  
Renqiang Xiong ◽  
J. N. Chung
Keyword(s):  
Particle Image Velocimetry ◽  
Particle Image ◽  
Flow Characteristics ◽  
Flow Structures ◽  
Micro Channel ◽  
Pressure Drops ◽  
Micro Particle Image Velocimetry ◽  
Image Velocimetry ◽  
Micro Channels ◽  
Shape And Size

Flow structures and pressure drops were investigated in rectangular serpentine micro-channels with miter bends which had hydraulic diameters of 0.209mm, 0.395mm and 0.549mm respectively. To evaluate the bend effect, the additional pressure drop due to the miter bend must be obtained. Three groups of micro-channels were fabricated to remove the inlet and outlet losses. A validated micro-particle image velocimetry (μPIV) system was used to achieve the flow structure in a serpentine micro-channel with hydraulic diameter of 0.173mm. The experimental results show the vortices around the outer and inner walls of the bend do not form when Re<100. Those vortices appear and continue to develop with the Re number when Re> 100-300, and the shape and size of the vortices almost remain constant when Re>1000. The bend loss coefficient Kb was observed to be related with the Re number when Re<100, with the Re number and channel size when Re>100. It almost keeps constant and changes in the range of ± 10% When Re is larger than some value in 1300-1500. And a size effect on Kb was also observed.

A particle image velocimetry study on the pulsatile flow characteristics in straight tubes with an asymmetric bulge

2000 ◽  
Vol 214 (5) ◽  
pp. 655-671 ◽  
Author(s):  
S C M Yu ◽  
J B Zhao
Keyword(s):  
Particle Image Velocimetry ◽  
Steady Flow ◽  
Pulsatile Flow ◽  
Flow Condition ◽  
Particle Image ◽  
Flow Characteristics ◽  
Reynolds Numbers ◽  
Working Fluid ◽  
Flow Conditions ◽  
Image Velocimetry

Flow characteristics in straight tubes with an asymmetric bulge have been investigated using particle image velocimetry (PIV) over a range of Reynolds numbers from 600 to 1200 and at a Womersley number of 22. A mixture of glycerine and water (approximately 40:60 by volume) was used as the working fluid. The study was carried out because of their relevance in some aspects of physiological flows, such as arterial flow through a sidewall aneurysm. Results for both steady and pulsatile flow conditions were obtained. It was found that at a steady flow condition, a weak recirculating vortex formed inside the bulge. The recirculation became stronger at higher Reynolds numbers but weaker at larger bulge sizes. The centre of the vortex was located close to the distal neck. At pulsatile flow conditions, the vortex appeared and disappeared at different phases of the cycle, and the sequence was only punctuated by strong forward flow behaviour (near the peak flow condition). In particular, strong flow interactions between the parent tube and the bulge were observed during the deceleration phase. Stents and springs were used to dampen the flow movement inside the bulge. It was found that the recirculation vortex could be eliminated completely in steady flow conditions using both devices. However, under pulsatile flow conditions, flow velocities inside the bulge could not be suppressed completely by both devices, but could be reduced by more than 80 per cent.

Particle Image Velocimetry Study of the Turbulence Characteristics in an Aerated Flotation Cell

2017 ◽  
Vol 56 (46) ◽  
pp. 13919-13928 ◽  
Author(s):  
Hossna Darabi ◽  
S. M. Javad Koleini ◽  
David Deglon ◽  
Bahram Rezai ◽  
Mahmoud Abdollahy
Keyword(s):  
Particle Image Velocimetry ◽  
Particle Image ◽  
Turbulence Characteristics ◽  
Image Velocimetry ◽  
Flotation Cell ◽  
Particle Image Velocimetry Study
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