Results 221 to 230 of about 64,050 (264)

Wall shear stress in collapsed tubes

The European Physical Journal Applied Physics, 1999
A small flexural wall rigidity brings unique features to cross-sectional shapes and blood flow within veins, which are characterised by a non-uniform hemodynamical environment acting upon endothelial cells. Velocity fields and related wall shear stress were numerically determined for a large number of conditions, assuming a fully developed, steady ...
S. Naili, C. Ribreau
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A new wall shear stress gauge

Experiments in Fluids, 1989
A new technique has been developed to measure the wall shear stress and its direction in a turbulent boundary layer. This technique involves the measurement of torque upon a very small cylindrical body placed above the wall deep in the viscous sublayer, so that the device is operating in the creeping flow regime.
Y. Gür, P. Leehey
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Determination of arterial wall shear stress

Science in China Series A: Mathematics, 2001
The arteries can remodel their structure and function to adapt themselves to the mechanical environment. In various factors that lead to vascular remodeling, the shear stress on the arterial wall induced by the blood flow is of great importance. However, there are many technique difficulties in measuring the wall shear stress directly at present.
Zhaorong Liu, Feng He, Gang Xu, Yong Chen   +3 more
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Proximal stenosis may induce initiation of cerebral aneurysms by increasing wall shear stress and wall shear stress gradient

International Journal for Numerical Methods in Biomedical Engineering, 2014
SUMMARYHemodynamic parameters, such as wall shear stress (WSS), WSS gradient (WSSG), aneurysm formation indicator (AFI), or gradient oscillatory number (GON), have been proposed to be linked to initiation of cerebral aneurysms. However, how such conditions occur in humans is unclear. We encountered a rare and interesting case to address this issue.
Kenichi, Kono, Takeshi, Fujimoto, Tomoaki, Terada   +2 more
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Wall shear stress in accelerating turbulent pipe flow

Journal of Fluid Mechanics, 2011
AbstractAn experimental study of wall shear stress in an accelerating flow of water in a pipe ramping between two steady turbulent flows has been undertaken in a large-scale experimental facility. Ensemble averaged mean and r.m.s. of the turbulent fluctuations of wall shear stresses have been derived from hot-film measurements from many repeated runs ...
He, S., Ariyaratne, C., Vardy, A. E.
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An instrumentation grade wall shear stress sensing system

2016 IEEE SENSORS, 2016
This paper describes development of a MEMS wall shear stress sensor system to be used in wind tunnel applications. An analog synchronous modulation and demodulation interface circuit allows for both ac and dc measurement of varying capacitance, yielding real-time dynamic and mean flow information with a low noise floor.
Casey Barnard, Jessica Meloy, Mark Sheplak   +2 more
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A Note on Wall Shear Stress in the Aorta

Journal of Biomechanical Engineering, 1982
J M, Tarbell, L J, Chang, T M, Hollis
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WALL SHEAR STRESS STATISTICS IN AN OSCILLATORY FLOW

2015
In this paper the statistics of the wall shear stress in acceleration-skewed oscillatory flows are studied by means of direct numerical simulations. The topic is of interest because of its implications in the understanding of various phenomena that take place at the bottom of sea waves.
SCANDURA, Pietro, Faraci, C, FOTI, Enrico   +2 more
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Wall Shear Stress Alteration: a Local Risk Factor of Atherosclerosis

Current Atherosclerosis Reports, 2022
Pavel Michalek, Tomáš Grus, Jan Malik   +2 more
exaly  

Wall Shear Stress

2022
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