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ENCIT 2020
18th Brazilian Congress of Thermal Sciences and Engineering
Evaluation of Different Turbulence Models for the Characterization of Shear Stresses in the Central Venous Access for Hemodialysis
Submission Author:
Saulo Gonçalves , MG
Co-Authors:
Saulo Gonçalves, Matheus Carvalho Barbosa Costa, Thabata Lucas, Jonathas Haniel, Mário Silva, Rudolf Huebner, Edna Maria de Faria Viana
Presenter: Saulo Gonçalves
doi://10.26678/ABCM.ENCIT2020.CIT20-0095
Abstract
Numerical models based on computational fluid dynamics (CFD) allow the investigation of hemodynamic factors that lead to the formation and propagation of thrombi in a non-invasive and relatively inexpensive way. In the present study we aim to develop a numerical model based on CFD to compare the use of different turbulence models for the characterization of shear stresses near the tip and lateral orifices of central venous catheter (CVC). All models evaluated, except k-ε, presented similar results, both in terms of average values and in terms of the general distribution of shear stresses in regions of low turbulence intensity. However, in regions with higher turbulence intensities, the results were considerably different.
Keywords
Blood flow, CFD, Turbulence Models, bioengenharia cardiovascular
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