Key result
Modeled periodic body acceleration, stenosis severity, and tapering alter pulsatile blood flow and shear stress.
Why the study?
The effects of stenosis severity, tapering, and externally imposed periodic body acceleration on pulsatile blood flow in stenosed tapered arteries were not fully characterized.
Mathematical modeling demonstrates that stenosis severity, tapering, and periodic body acceleration significantly affect blood flow characteristics in arteries.
No immediate change to clinical stenosis management; leaves open validation of modeled flow effects in patients.
A mathematical model is developed for the pulsatile flow of blood through a stenosed tapered artery under the influence of externally imposed body acceleration. The artery is assumed as a cylindrical tube with time-dependent radius having mild stenosis and the non-Newtonian behavior of blood is characterized by generalized Power-law model. The governing equations are transformed by using a radial transformation and solved numerically by a suitable finite difference scheme in order to obtain the velocity, fluid acceleration, wall shear stress, and flow rate. The effect of stenosis severity, tapering, and externally imposed body acceleration on the blood flow in artery is discussed with the help of graph. It is found that all flow characteristics are affected by the stenosis severity, tapering, and periodic acceleration applied on the body.
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Varshney et al. (2010) studied Stenosed tapered artery. Periodic body acceleration was evaluated on Velocity, fluid acceleration, wall shear stress, and flow rate. Mathematical modeling of pulsatile blood flow showed that velocity, fluid acceleration, wall shear stress, and flow rate are affected by stenosis severity, tapering, and periodic body acceleration.
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