Results 21 to 30 of about 5,179,678 (338)

LES of additive and non-additive pulsatile flows in a model arterial stenosis [PDF]

open access: yes, 2010
Transition of additive and non-additive pulsatile flows through a simple 3D model of arterial stenosis is investigated by using a large eddy simulation (LES) technique. We find in both the pulsatile cases that the interaction of the two shear layers, one
Fung YC   +5 more
core   +1 more source

Large-eddy simulation of physiological pulsatile flow through a channel with double constriction [PDF]

open access: yes, 2016
Pulsatile flow in a 3D model of arterial double stenoses is investigated using a large eddy simulation (LES) technique. The computational domain that has been chosen is a simple channel with a biological-type stenosis formed eccentrically on the top wall.
Molla, Md. Mamun, Paul, Manosh C.
core   +2 more sources

Convective instability and transient growth in steady and pulsatile stenotic flows [PDF]

open access: yes, 2008
We show that suitable initial disturbances to steady or long-period pulsatile flows in a straight tube with an axisymmetric 75%-occlusion stenosis can produce very large transient energy growths.
Barkley, Dwight   +2 more
core   +1 more source

The method to generate pulsatile circulatory fluid flow using microfluidics

open access: yesMethodsX, 2021
Microfluidic chips provide versatile tools to mimic the biological effect of blood flow on pluripotent stem cells (PSC). This paper presents methods for the use of microfluidics to model embryonic circulation using differentiated PSC.
Jingjing Li   +2 more
doaj   +1 more source

Studying the response of aortic endothelial cells under pulsatile flow using a compact microfluidic system.

open access: yesAnalytical Chemistry, 2019
We describe a piezoelectric pumping system for studying the mechanobiology of human aortic endothelial cells (HAECs) under pulsatile flow in microfluidic structures.
Mokhaled Mohammed   +7 more
semanticscholar   +1 more source

Fast pulsatile blood flow measurement in deep tissue through a multimode detection fiber

open access: yesJournal of Biomedical Optics, 2020
. Significance: Noninvasive in vivo fast pulsatile blood flow measurement in deep tissue is important because the blood flow waveform is correlated with physiological parameters, such as blood pressure and elasticity of blood vessels.
Renzhe Bi   +7 more
semanticscholar   +1 more source

The effects of pulsatile versus nonpulsatile flow on cerebral pulsatility index, mean flow velocity at the middle cerebral artery, regional cerebral oxygen saturation, cerebral gaseous microemboli counts, and short-term clinical outcomes in patients undergoing congenital heart surgeryCentral MessagePerspective

open access: yesJTCVS Open, 2023
Objective: The objective of this retrospective review was to evaluate whether or not pulsatile flow improves cerebral hemodynamics and clinical outcomes in pediatric congenital cardiac surgery patients.
Krishna Patel, BS   +5 more
doaj   +1 more source

Beyond the virtual intracranial stenting challenge 2007: non-Newtonian and flow pulsatility effects [PDF]

open access: yes, 2010
The attached article is a post print version of the final published version which may be accessed at the link below. Crown Copyright (c) 2010 Published by Elsevier Ltd.
Atherton, MA   +3 more
core   +1 more source

Easy Pulsatile Phantom for Teaching and Validation of Flow Measurements in Ultrasound

open access: yesUltrasound International Open, 2016
Purpose: To build a simple model to teach and validate non-pulsatile and pulsatile flow quantification in ultrasound. Materials and Methods: The setting consists of the following connected components: (1) medical syringe pump producing an adjustable ...
M. B. Rominger   +6 more
doaj   +1 more source

Geometrically Reduced Modelling of Pulsatile Flow in Perivascular Networks

open access: yesFrontiers in Physics, 2022
Flow of cerebrospinal fluid in perivascular spaces is a key mechanism underlying brain transport and clearance. In this paper, we present a mathematical and numerical formalism for reduced models of pulsatile viscous fluid flow in networks of generalized
Cécile Daversin-Catty    +3 more
doaj   +1 more source

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