Numerical and experimental simulation of transitional flow in a blood vessel junction

Sang Wook Lee, David S. Smith, Francis Loth, Paul F. Fischer, Hisham S. Bassiouny

Research output: Contribution to journalArticlepeer-review


Transitional flow within a subject-specific arteriovenous graft is examined through direct numerical simulation and experimental techniques. Simulations employing the spectral element method are conducted at Reynolds number 1,200 with two different flow divisions under a Newtonian fluid assumption. Laser Doppler anemometry is used to experimentally measure velocity in an optically clear rigid model with the same geometry. Good agreement is observed for both flow divisions with respect to time-averaged and fluctuating velocity. The flow field is characterized by a high-speed jet along the floor, flow separation, and a generally complex three-dimensional flow pattern. These results are novel in that they represent the first detailed comparison between experiments and numerical simulations for transitional flow within a subject-specific blood vessel junction.

Original languageEnglish (US)
Pages (from-to)1-22
Number of pages22
JournalNumerical Heat Transfer; Part A: Applications
Issue number1
StatePublished - Jan 1 2007
Externally publishedYes

ASJC Scopus subject areas

  • Numerical Analysis
  • Condensed Matter Physics


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