Hemodynamic study in 3D printed stenotic coronary artery models: experimental validation and transient simulation. Issue 6 (26th April 2021)

• Record Type: Journal Article
• Authors: Carvalho, Violeta; Rodrigues, Nelson; Ribeiro, Ricardo; Costa, Pedro F.; Teixeira, José C. F.; Lima, Rui A.; Teixeira, Senhorinha F. C. F.
• Is Part Of: Computer methods in biomechanics and biomedical engineering. Volume 24:Issue 6(2021)
• Page Start: 623
• Page End: 636
• Publication Date: 2021-04-26
• Subjects: Atherosclerosis -- blood flow -- CFD -- multiphase flow -- turbulence modeling -- validation; Biomechanics -- Data processing -- Periodicals; Biomedical engineering -- Periodicals; Biomechanics -- Periodicals; Biomedical Engineering -- methods -- Periodicals; Computing Methodologies -- Periodicals; 612.7
• DOI: 10.1080/10255842.2020.1842377
• Languages: English
• ISSNs: 1025-5842

Abstract

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.