Unsteady wall shear stress in a distensible tube.
basic_science · Level V
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- Record sourced from PubMed, PMID 1856243.
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Abstract
An asymptotic expression of the wall shear stress (WSS) in an elastic tube is deduced for small values of the Womersley parameter. In the case of a rigid tube this asymptotic expression is shown to compare better with the exact solution than Poiseuille's or Lambossy's approximations. Its integration in a one-dimensional model of the internal carotid artery blood flow predicts more marked systolic and less marked diastolic WSS than those predicted by the commonly used Poiseuille's approximation.
Medical subject headings
- Models, Cardiovascular
- Pulsatile Flow