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Updated: Jun 21, 2026

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
Unsteady magnetohydrodynamic blood flow through irregular multi-stenosed arteries
Norzieha Mustapha1, Norsarahaida Amin, Santabrata Chakravarty
1Department of Mathematics, Faculty of Science, Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor, Malaysia. norzieha@mel.fs.utm.my
This study analyzes blood flow through stenosed arteries under a magnetic field. Increasing magnetic field strength reduces and can eliminate flow separation, offering potential magnetotherapy benefits for arterial diseases.
Area of Science:
- Cardiovascular fluid dynamics
- Biomagnetohydrodynamics
Background:
- Arterial diseases involve complex blood flow patterns, particularly around stenoses.
- Flow separation in arteries can exacerbate disease progression and lead to complications.
Purpose of the Study:
- To analyze blood flow through realistic, irregular multi-stenosed arteries under a uniform transverse magnetic field.
- To investigate the effect of magnetic fields on flow separation in stenosed arteries.
Main Methods:
- Utilized axisymmetric modeling of stenosed artery geometry derived from 3D casts.
- Employed Marker and Cell (MAC) and Successive-Over-Relaxation (SOR) methods to solve unsteady magnetohydrodynamic (MHD) equations and the pressure-Poisson equation.
Main Results:
- Flow separation predominantly occurs downstream of multi-stenoses.
- Increasing magnetic field strength progressively shrinks the flow separation region.
- Complete elimination of flow separation was observed at sufficiently high Hartmann numbers.
Conclusions:
- Magnetic field application can significantly reduce or eliminate flow separation in stenosed arteries.
- These findings suggest potential clinical applications for magnetotherapy in managing arterial diseases by improving blood flow dynamics.
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