A computational investigation using the nonNewtonian Sisko model and finite element analysis to determine blood flow characteristics in trapezoidal stenosed arteries

Arterial stenosis, a narrowing of the artery, significantly impacts blood flow dynamics and heat transfer. Although this phenomenon has been studied broadly, there is very less study about the complex interactions between nonNewtonian blood behavior, complicated artery geometry and temperature fluctuations. Using the Sisko model to represent the nonNewtonian blood nature in a trapezoidally stenotic artery, this study looks to clarify impact of arterial stenosis on blood flow dynamics. This study specifically looks into the temperature, pressure and velocity profiles in these circumstances. A Sisko structural equation-based mathematical model is created to represent blood flow via a trapezoidally stenosed artery. The governing equations which include momentum, energy conservation and continuity are numerically solved with the proper boundary conditions. Under various parametric values, the study shows complex fluctuations in the temperature, pressure and velocity profiles within the stenosed artery. These profiles are greatly impacted by the nonNewtonian conduct of blood, especially in the stenosis zone. It is discovered that the degree of stenosis is important in determining heat transmission, shear stress and flow resistance. Important new information about the hemodynamics and thermal behavior of blood in stenosed arteries is provided by this study. The results increase our understanding of vascular disorders and have the potential to guide the creation of innovative diagnostic and medical techniques.