Large-eddy simulation of physiological pulsatile flow through a constricted channel

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dc.contributor.authorHossain, Afzal
dc.contributor.examiningcommitteeKuhn, David (Mechanical and Manufacturing Engineering) Rajapakse, Athula (Electrical and Computer Engineering)en_US
dc.contributor.supervisorWang, Bing-Chen (Mechanical and Manufacturing Engineering)en_US
dc.date.accessioned2012-09-20T16:07:41Z
dc.date.available2012-09-20T16:07:41Z
dc.date.issued2012-09-20
dc.degree.disciplineMechanical and Manufacturing Engineeringen_US
dc.degree.levelMaster of Science (M.Sc.)en_US
dc.description.abstractIn this thesis, large-eddy simulation (LES) is used to simulate both Newtonian and non-Newtonian physiological pulsatile flows in constricted channels to gain insights into the physical phenomenon of laminar-turbulent flow transition due to the presence of an artificial arterial stenosis. The advanced dynamic nonlinear subgrid-scale stress (SGS) model of Wang and Bergstrom (DNM) was utilized to conduct numerical simulations and its predictive performance was examined in comparison with that of the conventional dynamic model (DM) of Lilly. An in-house LES code has been modified to conduct the unsteady numerical simulations, and the results obtained have been validated against available experimental and direct numerical simulation (DNS) results. The physical characteristics of the flow field have been thoroughly studied in terms of the resolved mean velocity, turbulence kinetic energy, viscous wall shear stress, and turbulence energy spectra along the central streamline of the domain.en_US
dc.description.noteOctober 2012en_US
dc.identifier.urihttp://hdl.handle.net/1993/8894
dc.language.isoengen_US
dc.rightsopen accessen_US
dc.subjectLarge-eddy simulationen_US
dc.subjectStenosisen_US
dc.subjectSGS stressen_US
dc.subjectTurbulence kinetic energyen_US
dc.titleLarge-eddy simulation of physiological pulsatile flow through a constricted channelen_US
dc.typemaster thesisen_US
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