Non-Newtonian Effects of Blood Flow on Hemodynamics in Pulmonary Stenosis: Numerical Simulation

This paper aims to explore the construction of an individualized pulmonary artery stenosis model based on computed tomography (CT) images. The is simulated using a porous medium, and numerical simulation carried out by computational fluid dynamics (CFD) method discuss non-Newtonian effects hemodynamics. hemodynamic parameters quantitative pressure ratio (QPPR) right are obtained. change curves show that more significant than those Newtonian fluid. Under condition, velocity drop faster when blood flow enters into region. There high wall shear stress in downstream. margin error between QPPR value clinical measurement not 10%. work provides evidence closer reality medium used model. contributes assessing severity behavior essential guide disease treatment.