Experimental and computational validation of Hele-Shaw stagnation flow with varying shear stress

Brandon J. Tefft*, Adrian M. Kopacz, Wing Kam Liu, Shu Q. Liu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


An in vitro flow model system with continuous variation of fluid shear stress can be used to test cell responses to a range of shear stresses. In this investigation, we validated such a flow system computationally for steady and unsteady flow conditions and experimentally for steady flow conditions. The unsteady flow validation is important for studying cells such as endothelial cells that experience unsteady flow conditions in their native environment. The system is capable of exposing cells in different regions of the chamber to steady or unsteady shear stress conditions with average values ranging linearly from 0 to 30 dyn/cm {2} 2. These tests and analyses demonstrate that the variable-width parallel plate flow system can be used to test the influence of a range of steady and unsteady fluid shear stress levels on cell activities.

Original languageEnglish (US)
Pages (from-to)1463-1473
Number of pages11
JournalComputational Mechanics
Issue number6
StatePublished - Dec 2013


  • Endothelial cells
  • Flow chamber
  • Shear stress
  • Unsteady flow
  • adhesion

ASJC Scopus subject areas

  • Computational Mechanics
  • Ocean Engineering
  • Mechanical Engineering
  • Computational Theory and Mathematics
  • Computational Mathematics
  • Applied Mathematics


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