Key result
Flow swirl in a model of a blood vessel with asymmetrical stenosis can lead to an increase in the length of the reverse-flow zone.
In a model of a blood vessel with asymmetrical stenosis, flow swirl can increase the reverse-flow zone, and turbulence models are preferable for Reynolds numbers > 300.
Hypothesis-generating for swirl in asymmetric stenosis models; requires in vivo validation before clinical relevance.
Investigation of weakly swirling flow in a model of a blood vessel with asymmetrical stenosis has been performed using both experimental flow measurement techniques (ultrasound Doppler) and computational fluid dynamics methods. A special attention is paid to getting data for the length of the reverse-flow zone occurring past the stenosis. It has been established that the laminar steady-state flow model is acceptable for numerical analysis of flow past the given-geometry stenosis at Reynolds number values less than 300. At higher values of this parameter, application of the semi-empirical k-ω SST turbulence model is preferable. It has been shown that flow swirl can lead to an increase of the reverse-flow zone.
No takes yet. Share an insight, caveat, or question.
Gataulin et al. (2015) studied Blood vessel with asymmetrical stenosis. Flow swirl was evaluated on Length of the reverse-flow zone occurring past the stenosis. Flow swirl in a model of a blood vessel with asymmetrical stenosis can lead to an increase in the length of the reverse-flow zone.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: