Significance of Reynolds Number Consistency in Non-Newtonian Hemodynamic Simulations: Insights from Fontan Circulation.

ABSTRACT: The non-Newtonian properties of blood flow have been widely debated in hemodynamic research, particularly for congenital heart defects. Many studies comparing Newtonian and non-Newtonian models have overlooked dimensional group consistency, resulting in comparisons influenced by inconsistent Reynolds numbers rather than viscosity effects. In this study, we address this issue by applying a generalized Reynolds number formulation to ensure consistent dimensionless group comparisons. We compare flow structures and hemodynamic metrics in 20 pediatric Fontan circulations using the non-Newtonian Casson model against both conventional and generalized Reynolds number-corrected Newtonian models. Our results show that the conventional Newtonian model significantly overestimates flow rotation and und

SUBMITTER: Bilgi C 

PROVIDER: S-EPMC12777659 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature