Numerical simulation of the blood flow through the coronary artery stenosis: effects of varying eccentricity

M Timofeeva, A Ooi, EKW Poon, P Barlis - Computers in Biology and …, 2022 - Elsevier
Blockages within arteries, called stenoses, are a common cause of coronary artery disease
(CAD). Stenosis is a result of atherosclerotic plaque build-up limits blood flow and hence …

Effect of a bend on vortex formation and evolution in a three-dimensional stenosed geometry during pulsatile flow

M Owais, AY Usmani, K Muralidhar - Physics of Fluids, 2023 - pubs.aip.org
Stenosis at arterial bends alters hemodynamics and instigates abnormal disease
progression. This configuration is addressed numerically by exploring pulsatile flow …

Validation of pressure drop assessment using 4D flow MRI‐based turbulence production in various shapes of aortic stenoses

H Ha, JP Kvitting, P Dyverfeldt… - Magnetic resonance in …, 2019 - Wiley Online Library
Purpose To validate pressure drop measurements using 4D flow MRI‐based turbulence
production in various shapes of stenotic stenoses. Methods In vitro flow phantoms with …

Physics of fluid flow in an hourglass (converging–diverging) microchannel

S Goli, SK Saha, A Agrawal - Physics of Fluids, 2022 - pubs.aip.org
This work presents the numerical and experimental study of flow physics and
characterization in hourglass microchannels at different geometric and flow parameters such …

A new mechanism for periodic bursting of the recirculation region in the flow through a sudden expansion in a circular pipe

B Lebon, MQ Nguyen, J Peixinho, MS Shadloo… - Physics of …, 2018 - pubs.aip.org
We report the results of a combined experimental and numerical study of specific finite-
amplitude disturbances for transition to turbulence in the flow through a circular pipe with a …

Direct numerical simulation of laminar-turbulent transition in a non-axisymmetric stenosis model for Newtonian vs. shear-thinning non-Newtonian rheologies

MO Khan, K Valen-Sendstad, DA Steinman - Flow, Turbulence and …, 2019 - Springer
Steady inflow through a non-axisymmetric stenotic model at Re= 500-1000 for Newtonian
and shear-thinning non-Newtonian rheologies was studied numerically to investigate the …

The FDA nozzle benchmark:“In theory there is no difference between theory and practice, but in practice there is”

AW Bergersen, M Mortensen… - … journal for numerical …, 2019 - Wiley Online Library
The utility of flow simulations relies on the robustness of computational fluid dynamics (CFD)
solvers and reproducibility of results. The aim of this study was to validate the Oasis CFD …

Analysing Spatio-temporal flow hemodynamics in an artery manifesting stenosis

M Amir, AY Usmani, M Varshney, SF Anwer… - International Journal of …, 2022 - Elsevier
Atherosclerosis is a pathological condition associated with arterial narrowing. Altered
hemodynamics within stenosed arteries plays a substantive role in myocardial infarction, a …

Pulsatile flow in a compliant stenosed asymmetric model

AY Usmani, K Muralidhar - Experiments in Fluids, 2016 - Springer
Time-varying velocity field in an asymmetric constricted tube is experimentally studied using
a two-dimensional particle image velocimetry system. The geometry resembles a vascular …

Transition to turbulence in an oscillatory flow through stenosis

K Jain - Biomechanics and modeling in mechanobiology, 2020 - Springer
Onset of flow transition in a sinusoidally oscillating flow through a rigid, constant area
circular pipe with a smooth sinusoidal obstruction in the center of the pipe is studied by …