Parametric Wall Shear Stress Characterization of the Rotating Cage Test Method

CORROSION ◽  
10.5006/2864 ◽  
2019 ◽  
Vol 75 (6) ◽  
pp. 580-586
Author(s):  
Allan Runstedtler ◽  
Jinxing Huang ◽  
Patrick Boisvert ◽  
Nicholas Senior
Keyword(s):  
Shear Stress ◽  
Wall Shear Stress ◽  
Test Method ◽  
Wall Shear ◽  
Cage Test

Exploring wall shear stress spatiotemporal heterogeneity in coronary arteries combining correlation-based analysis and complex networks with computational hemodynamics

2020 ◽  
Vol 234 (11) ◽  
pp. 1209-1222 ◽  
Author(s):  
Karol Calò ◽  
Giuseppe De Nisco ◽  
Diego Gallo ◽  
Claudio Chiastra ◽  
Ayla Hoogendoorn ◽  
...  
Keyword(s):  
Shear Stress ◽  
Wall Shear Stress ◽  
Complex Networks ◽  
Coronary Arteries ◽  
Early Stage ◽  
Flow Direction ◽  
Computational Hemodynamics ◽  
Time Histories ◽  
Wall Shear

Atherosclerosis at the early stage in coronary arteries has been associated with low cycle-average wall shear stress magnitude. However, parallel to the identification of an established active role for low wall shear stress in the onset/progression of the atherosclerotic disease, a weak association between lesions localization and low/oscillatory wall shear stress has been observed. In the attempt to fully identify the wall shear stress phenotype triggering early atherosclerosis in coronary arteries, this exploratory study aims at enriching the characterization of wall shear stress emerging features combining correlation-based analysis and complex networks theory with computational hemodynamics. The final goal is the characterization of the spatiotemporal and topological heterogeneity of wall shear stress waveforms along the cardiac cycle. In detail, here time-histories of wall shear stress magnitude and wall shear stress projection along the main flow direction and orthogonal to it (a measure of wall shear stress multidirectionality) are analyzed in a representative dataset of 10 left anterior descending pig coronary artery computational hemodynamics models. Among the main findings, we report that the proposed analysis quantitatively demonstrates that the model-specific inlet flow-rate shapes wall shear stress time-histories. Moreover, it emerges that a combined effect of low wall shear stress magnitude and of the shape of the wall shear stress–based descriptors time-histories could trigger atherosclerosis at its earliest stage. The findings of this work suggest for new experiments to provide a clearer determination of the wall shear stress phenotype which is at the basis of the so-called arterial hemodynamic risk hypothesis in coronary arteries.

Wall shear stress characterization of a 3D bluff-body separated flow

2013 ◽  
Vol 42 ◽  
pp. 55-69 ◽  
Author(s):  
Grégoire Fourrié ◽  
Laurent Keirsbulck ◽  
Larbi Labraga
Keyword(s):  
Shear Stress ◽  
Wall Shear Stress ◽  
Bluff Body ◽  
Separated Flow ◽  
Wall Shear

scholarly journals Characterization of Abnormal Wall Shear Stress Using 4D Flow MRI in Human Bicuspid Aortopathy

2014 ◽  
Vol 43 (6) ◽  
pp. 1385-1397 ◽  
Author(s):  
Pim van Ooij ◽  
Wouter V. Potters ◽  
Jeremy Collins ◽  
Maria Carr ◽  
James Carr ◽  
...  
Keyword(s):  
Shear Stress ◽  
Wall Shear Stress ◽  
4D Flow Mri ◽  
4D Flow ◽  
Flow Mri ◽  
Wall Shear

Characterization of the in vivo wall shear stress environment of human fetus umbilical arteries and veins

2016 ◽  
Vol 16 (1) ◽  
pp. 197-211 ◽  
Author(s):  
Shier Nee Saw ◽  
Chia Dawn ◽  
Arijit Biswas ◽  
Citra Nurfarah Zaini Mattar ◽  
Choon Hwai Yap
Keyword(s):  
Shear Stress ◽  
Wall Shear Stress ◽  
Human Fetus ◽  
Stress Environment ◽  
Wall Shear ◽  
Umbilical Arteries ◽  
Arteries And Veins
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