Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/13422
Title: Numerical Studies on Physiological Pulsatile Flow Through Stenotic Tubes
Authors: LIU XI
Keywords: Numerical modelling, Finite volume, Physiological flow, Constriction, Tube, Laminar flow
Issue Date: 28-Jul-2007
Source: LIU XI (2007-07-28). Numerical Studies on Physiological Pulsatile Flow Through Stenotic Tubes. ScholarBank@NUS Repository.
Abstract: Numerical studies have been carried out for laminar physiological pulsatile flow through a circular tube with smooth single and double constrictions. A second-order finite volume method based on the modified SIMPLE method with collocated non-orthogonal grid arrangement has been developed. For a vessel with single constriction, the characteristics of the incoming pulsation waveform of the flow rate have a considerable impact on the flow behaviour in the tube in terms of streamline, dimensionless pressure and wall vorticity distributions. The variation of the geometry of the stenosis also influences the interior flow pattern although the incoming flow remains consistent. The extent to which the different parameters affect the vortical flow is not the same for systolic and diastolic phase of the physiological pulsation. For double constriction, the post-stenotic flow behaviour downstream the second stenosis is not as severely affected by the incoming flow as for single constricted tubes. Distinct geometric configurations of the two stenoses will result in obvious variations of the induced vortices.
URI: http://scholarbank.nus.edu.sg/handle/10635/13422
Appears in Collections:Master's Theses (Open)

Show full item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
Numerical Studies on Physiological Pulsatile Flow through Stenotic Tubes.pdf3.23 MBAdobe PDF

OPEN

NoneView/Download

Page view(s)

253
checked on Jan 15, 2018

Download(s)

247
checked on Jan 15, 2018

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.