Abstract
A theoretical study of three metallic nanoparticles like gold, copper and silver and non-metallic nanoparticles like aluminium oxide and titanium oxide in a multi-stenosed artery with a regular catheter is studied. Blood in the artery is considered Newtonian fluid due to the presence of plasma. By the assumptions of mild stenosis, the governing equations of nanoparticles are simplified, and using Cauchy-Euler method, the solutions are found. We focus on the study of various thermal conductivity models in nanofluids. The effects of thermal conductivity on these nanoparticles are studied and graphically plotted. The study reveals that the non-metallic nanoparticles enhance the flow of blood in the arteries and regulate the flow in axial velocity. Multiple stenosis in the artery with parameters such as shape parameter, stenosis height, and catheter radius has significant effects on velocity, temperature, wall shear stress, and resistance impedance. The effect of the Grashof number on different physical parameters is also discussed. Models depending on the thermal conductivity factors rather than nanofluid volume fraction are highly reliable.