Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Steady, Laminar Flow in Circular Tubes

Steady, Laminar Flow in Circular Tubes

Hagen-Poiseuille flow describes a viscous fluid's steady, incompressible flow through a cylindrical tube with a constant radius R. This flow profile is often applied to understand fluid transport in narrow channels, such as capillaries. It serves as a foundational example of laminar flow. In this model, cylindrical coordinates (r,θ,z) are used to describe the radial (r), angular (θ), and axial (z) dimensions within the tube. For Hagen-Poiseuille flow, the velocity profile is purely axial,...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

A computational study of expiratory particle transport and vortex dynamics during breathing with and without face masks.

Physics of fluids (Woodbury, N.Y. : 1994)·2021

Same author

Fluid dynamics simulations show that facial masks can suppress the spread of COVID-19 in indoor environments.

ArXiv·2020

Same author

Airflow limitation in a collapsible model of the human pharynx: physical mechanisms studied with fluid-structure interaction simulations and experiments.

Physiological reports·2019

Same author

Flow-Structure Interaction Simulations of the Aortic Heart Valve at Physiologic Conditions: The Role of Tissue Constitutive Model.

Journal of biomechanical engineering·2018

Same author

Non-linear rotation-free shell finite-element models for aortic heart valves.

Journal of biomechanics·2016

Same author

Simultaneous measurement of 3D zooplankton trajectories and surrounding fluid velocity field in complex flows.

The Journal of experimental biology·2015

Search research articles

Related Experiment Video

Updated: May 12, 2026

Experimental Investigation of Secondary Flow Structures Downstream of a Model Type IV Stent Failure in a 180° Curved Artery Test Section

Experimental Investigation of Secondary Flow Structures Downstream of a Model Type IV Stent Failure in a 180° Curved Artery Test Section

Published on: July 19, 2016

Vortex phenomena in sidewall aneurysm hemodynamics: experiment and numerical simulation.

Trung B Le¹, Daniel R Troolin, Devesh Amatya

¹St. Anthony Falls Laboratory and Department of Civil Engineering, University of Minnesota, Minneapolis, MN 55455, USA.

Annals of Biomedical Engineering

|April 23, 2013

Summary

Unsteady vortex formation at intracranial aneurysm necks is investigated using high-resolution experiments and simulations. These studies reveal complex hemodynamics crucial for understanding aneurysm growth and rupture.

More Related Videos

Particle Image Velocimetry Investigation of Hemodynamics via Aortic Phantom

Particle Image Velocimetry Investigation of Hemodynamics via Aortic Phantom

Published on: February 25, 2022

Noninvasive Determination of Vortex Formation Time Using Transesophageal Echocardiography During Cardiac Surgery

Noninvasive Determination of Vortex Formation Time Using Transesophageal Echocardiography During Cardiac Surgery

Published on: November 28, 2018

Related Experiment Videos

Last Updated: May 12, 2026

Experimental Investigation of Secondary Flow Structures Downstream of a Model Type IV Stent Failure in a 180° Curved Artery Test Section

Experimental Investigation of Secondary Flow Structures Downstream of a Model Type IV Stent Failure in a 180° Curved Artery Test Section

Published on: July 19, 2016

Particle Image Velocimetry Investigation of Hemodynamics via Aortic Phantom

Particle Image Velocimetry Investigation of Hemodynamics via Aortic Phantom

Published on: February 25, 2022

Noninvasive Determination of Vortex Formation Time Using Transesophageal Echocardiography During Cardiac Surgery

Noninvasive Determination of Vortex Formation Time Using Transesophageal Echocardiography During Cardiac Surgery

Published on: November 28, 2018

Area of Science:

Biomedical Engineering
Fluid Dynamics
Medical Imaging

Background:

Intracranial aneurysms pose significant risks, with growth and rupture linked to hemodynamic factors.
Understanding blood flow dynamics within aneurysms is critical for predicting and preventing rupture.

Purpose of the Study:

To investigate the dynamics of unsteady vortex formation at the neck of intracranial aneurysms.
To compare high-resolution laboratory experiments with numerical simulations for aneurysm hemodynamics.

Main Methods:

Utilized a pulse duplicator system with a high-resolution in vitro model of an intracranial aneurysm.
Conducted time-resolved three-dimensional velocity measurements and high-resolution numerical simulations.
Validated experimental data against computational fluid dynamics (CFD) results.

Main Results:

Demonstrated excellent agreement between experimental and simulated flow fields, including instantaneous velocity and coherent structures.
Observed the formation of a distinct vortical structure near the proximal neck during early systole.
Tracked the advection of this vortex across the aneurysm neck, leading to impingement on the distal wall.

Conclusions:

Vortex formation at the aneurysm neck is a key phenomenon influencing intracranial aneurysm hemodynamics.
High-resolution experimental and computational techniques are essential for accurately studying complex aneurysm blood flow.
Findings support the link between pulsatile flow, vortex dynamics, and aneurysm progression.