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Computational Prediction of Hemolysis in a Centrifugal Ventricular Assist Device
Author(s) -
Pinotti Marcos,
Rosa Eugenio S.
Publication year - 1995
Publication title -
artificial organs
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.684
H-Index - 76
eISSN - 1525-1594
pISSN - 0160-564X
DOI - 10.1111/j.1525-1594.1995.tb02326.x
Subject(s) - hemolysis , centrifugal pump , cardiology , ventricular assist device , computer science , medicine , biomedical engineering , engineering , mechanical engineering , heart failure , impeller
This paper describes the use of computational fluid dynamics (CFD) to predict numerically the hemolysis in centrifugal pumps. A numerical hydrodynamical model, based on the full Navier‐Stokes equation, was used to obtain the flow in a vaneless centrifugal pump (of corotating disks type). After proper postprocessing, critical zones in the channel were identified by means of two‐dimensional color‐coded maps of %Hb release. Simulation of different conditions revealed that flow behavior at the entrance region of the channel is the main cause of blood trauma in such devices. A useful feature resulting from the CFD simulation is the visualization of critical flow zones that are impossible to determine experimentally with in vitro hemolysis tests.