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Title: Numerical simulation of steady and pulsatile flow through smoothly constricted tube
Keywords: Numerical simulation, constriction, pulsatile flow, steady flow, control volume, tube
Issue Date: 10-Jan-2005
Citation: LI GENGCAI (2005-01-10). Numerical simulation of steady and pulsatile flow through smoothly constricted tube. ScholarBank@NUS Repository.
Abstract: Numerical simulations have been carried out for steady and pulsatile laminar flow in tubes with single constriction and series constrictions. The second-order finite volume method has been developed to solve the governing equation on a non-staggered non-orthogonal grids. For steady flow, the most important factors that affect the characteristics of the flow field are the Reynolds number and the constriction ratio. For pulsatile flow, the variation of Reynolds number can greatly influence the flow patterns. The flow fields can be greatly affected by the flow rate at previous instants for the higher Womersley number. The severer constriction can cause peak wall vorticity and pressure drop to increase dramatically. The comparison of the three pulsatile flows shows that the flow characteristics cannot be properly estimated if the equivalent physiological or sinusoidal pulsatile flow instead of actual physiological flow is used in the study of the arterial flow through stenosis.
Appears in Collections:Master's Theses (Open)

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