Magnetohydrodynamic blood flow study in stenotic coronary artery using lattice Boltzmann method

Area of Science:

• Biomedical Engineering
• Fluid Dynamics
• Magnetohydrodynamics

Background:

• Cardiovascular diseases, including atherosclerosis, are a leading global cause of death.
• Hemodynamics significantly impacts cardiovascular system function.
• Blood's magnetic properties are crucial for hemodynamics and have clinical relevance.

Purpose of the Study:

• To numerically investigate the impact of high magnetic fields on blood flow within a stenotic artery.
• To analyze hydrodynamic and magneto-hydrodynamic behaviors in narrowed arterial segments.

Main Methods:

• A double population D2Q9 lattice Boltzmann model was employed.
• Velocity and magnetic fields were solved using the lattice Boltzmann method.
• Blood was modeled as a homogeneous, Newtonian bio-magnetic fluid.

Main Results:

• Increased velocity and recirculation zones were observed with higher stenosis degree and Reynolds number.
• Elevated Hartmann numbers led to decreased velocity, recirculation zones, and pressure drop.
• Model results showed good agreement with existing numerical and experimental data.

Conclusions:

• The proposed lattice Boltzmann model is effective for analyzing magneto-hydrodynamic blood flow in stenotic arteries.
• Findings can aid clinicians in managing cardiovascular disorders and regulating blood flow.
• Results are particularly relevant for surgical interventions involving blood flow manipulation.