Numerical study of turbulence models in the computation of blood flow in cannulas

Felix A. Salazar, Luis R. Rojas-Solórzano, James F. Antaki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

In recent years, CFD has become an increasingly used tool in the design of blood-based devices. However, the estimation of red blood cells damage (hemolysis) remains a very important challenge due to the complex rheology of blood and the turbulence present in most pumping devices. The objective of this study was to identify an appropriate turbulence model suitable for predicting hemolysis in Hemodialysis cannula. Several modern turbulence models were evaluated in comparison to Direct Numerical Simulation (DNS), which was used as the gold standard. The fluid dynamics in the cannula was modeled as a coaxial jet in which Reynolds' number approached 2800. Based on comparison of velocity and stress time-averaged profiles, the Shear Stress Transport (SST) model with Gamma-Theta transition was identified as an optimal compromise between accuracy and computational cost.

Original languageEnglish
Title of host publication2008 Proceedings of the ASME Fluids Engineering Division Summer Conference, FEDSM 2008
Pages999-1005
Number of pages7
EditionPART B
DOIs
Publication statusPublished - Sep 21 2009
Event2008 ASME Fluids Engineering Division Summer Conference, FEDSM 2008 - Jacksonville, FL, United States
Duration: Aug 10 2008Aug 14 2008

Publication series

Name2008 Proceedings of the ASME Fluids Engineering Division Summer Conference, FEDSM 2008
NumberPART B
Volume1

Other

Other2008 ASME Fluids Engineering Division Summer Conference, FEDSM 2008
CountryUnited States
CityJacksonville, FL
Period8/10/088/14/08

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes
  • Mechanical Engineering

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