Hemodynamic study in 3D printed stenotic coronary artery models: experimental validation and transient simulation
Violeta Carvalho, Nélson Rodrigues, Ricardo Ribeiro, Pedro F. Costa, José Carlos Teixeira, Rui Lima, Senhorinha Teixeira
Abstract
Atherosclerosis is a progressive disease that can significantly reduce blood supply to vital organs, being one of the main causes of death worldwide. In this work, a numerical and experimental study in 3D printed stenotic coronary arteries, considering both steady and pulsatile blood flow conditions, is presented. The results revealed that a degree of stenosis superior to 50% creates disturbed flows downstream of the contraction, with an accented increase in the wall shear stress measurements at the stenosis throat. Finally, the multiphase mixture was investigated and compared with a single-phase modelling, and only slight differences were observed right after the stenosis throat.