Related Experiment Video
Updated: Jul 11, 2026
10:25
Microfluidic Flow Chambers Using Reconstituted Blood to Model Hemostasis and Platelet Transfusion In Vitro
Published on: March 19, 2016
Blood flow multiscale phenomena.
Ante Agić1, Budimir Mijović, Tatjana Nikolić
1Faculty of Chemical Engineering and Technology, University of Zagreb, Zagreb, Croatia. aagic@marie.fkit.hr
Collegium Antropologicum
|September 13, 2007
Summary
This study analyzes how dynamic blood vessel shapes and pulsatile blood flow impact secondary flow, wall shear stress, and platelet deposition. Findings reveal crucial insights into cardiovascular disease mechanisms.
Area of Science:
- Cardiovascular Science
- Biomedical Engineering
- Fluid Dynamics
Background:
- Cardiovascular disease is a leading cause of mortality.
- Understanding blood flow dynamics in vessels is critical for disease prevention and treatment.
Purpose of the Study:
- To analyze the effects of dynamic vascular geometry (curvature, torsion, bifurcation) and pulsatile blood flow on secondary flow, wall shear stress, and platelet deposition.
- To investigate the multi-scale physical phenomena involved in blood flow dynamics.
Main Methods:
- Perturbation analysis and numerical modeling were employed to examine the multi-scale physical phenomena.
- Experimental analysis of bifurcation and branching phenomena using a blood-like fluid in an elastic Y-model.
- Falker-Skan flow model used for numerical resolution of complex branching geometries in platelet deposition.
Main Results:
- Secondary flow is influenced by pulsatile pressure, and time-dependent vascular bending and torsion.
- Experimental data from Y-model provided insights into bifurcation and branching flow dynamics.
- Numerical modeling successfully resolved complex geometries near branching for platelet deposition.
Conclusions:
- Dynamic vascular geometry and pulsatile blood flow significantly affect secondary flow, wall shear stress, and platelet deposition.
- The study provides a comprehensive understanding of blood flow mechanics relevant to cardiovascular disease.
- Integrated experimental and numerical approaches offer a robust method for studying vascular hemodynamics.
Related Concept Videos
01:26Scaling
In designing and analyzing filters, resonant circuits, or circuit analysis at large, working with standard element values like 1 ohm, 1 henry, or 1 farad can be convenient before scaling these values to more realistic figures. This approach is widely utilized by not employing realistic element values in numerous examples and problems; it simplifies mastering circuit analysis through convenient component values. The complexity of calculations is thereby reduced, with the understanding that...
01:29Blood Flow
Blood is pumped by the heart into the aorta, the largest artery in the body, and then into increasingly smaller arteries, arterioles, and capillaries. The velocity of blood flow decreases with increased cross-sectional blood vessel area. As blood returns to the heart through venules and veins, its velocity increases. The movement of blood is encouraged by smooth muscle in the vessel walls, the movement of skeletal muscle surrounding the vessels, and one-way valves that prevent backflow.