Image-based computational fluid dynamics in a carotid artery
Image-based computational fluid dynamics in a carotid artery
Literature presents numerical simulations on image-based geometry where blood is treated as a Newtonian fluid, while others simulations assumed a non-Newtonian blood with two or three-dimensional axisymmetric geometry. The present work investigates the non-Newtonian behavior of a pulsating blood flow through a stenosed carotid artery, realistically reconstructed with the patient-specific geometry of a 60 years old man with an intimal thickening of 90% degree of stenosis. Lumen boundary contours are segmented using commercial image-processing software AMIRA for a 3D geometry reconstruction. High-quality tetrahedral mesh is generated using commercial mesh-generator code GAMBIT. The 3-D unsteady incompressible Navier-Stokes equations are solved using the commercial finite volume code FLUENT. The boundary condition is assumed from a flow-rate-wave of the literature using the FFT method and imposing a pressure sinusoidal signal with 20 harmonics.
123-128
The American Society of Mechanical Engineers
Gori, F.
f7e76614-37d8-4c3b-b7b0-8c6603a4515f
Boghi, A.
54a72da6-c8a2-468c-9773-897efac0638f
2010
Gori, F.
f7e76614-37d8-4c3b-b7b0-8c6603a4515f
Boghi, A.
54a72da6-c8a2-468c-9773-897efac0638f
Gori, F. and Boghi, A.
(2010)
Image-based computational fluid dynamics in a carotid artery.
In Proceedings of the ASME International Mechanical Engineering Congress and Exposition 2009, IMECE 2009.
vol. 2,
The American Society of Mechanical Engineers.
.
(doi:10.1115/IMECE2009-10302).
Record type:
Conference or Workshop Item
(Paper)
Abstract
Literature presents numerical simulations on image-based geometry where blood is treated as a Newtonian fluid, while others simulations assumed a non-Newtonian blood with two or three-dimensional axisymmetric geometry. The present work investigates the non-Newtonian behavior of a pulsating blood flow through a stenosed carotid artery, realistically reconstructed with the patient-specific geometry of a 60 years old man with an intimal thickening of 90% degree of stenosis. Lumen boundary contours are segmented using commercial image-processing software AMIRA for a 3D geometry reconstruction. High-quality tetrahedral mesh is generated using commercial mesh-generator code GAMBIT. The 3-D unsteady incompressible Navier-Stokes equations are solved using the commercial finite volume code FLUENT. The boundary condition is assumed from a flow-rate-wave of the literature using the FFT method and imposing a pressure sinusoidal signal with 20 harmonics.
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Published date: 2010
Venue - Dates:
2009 ASME International Mechanical Engineering Congress and Exposition, IMECE2009, , Lake Buena Vista, FL, United States, 2009-11-13 - 2009-11-19
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Local EPrints ID: 421746
URI: http://eprints.soton.ac.uk/id/eprint/421746
PURE UUID: 66854c93-5159-428c-a9f1-13c902d8654a
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Date deposited: 26 Jun 2018 16:30
Last modified: 15 Mar 2024 20:21
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Author:
F. Gori
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