Journal
MEDICAL ENGINEERING & PHYSICS
Volume 33, Issue 1, Pages 38-46Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.medengphy.2010.09.005
Keywords
Hemodynamics; Helix; Prostheses; Stent; Graft
Categories
Funding
- KOSEF (Korea Science and Engineering Foundation)
- Brain Korea 21 Project
Ask authors/readers for more resources
The objective of the present study is to investigate flows in helically sinuous tubes with a small amplitude of helicity for physiological and clinical applications. Three-dimensional computations of steady flows in helically sinuous tubes are carried out by using a Navier-Stokes solver based on the spectral/hp element method for high accuracy. Results show that the flow fields are affected by the curvature and the torsion of the helically sinuous tube geometry in terms of axial velocity, axial vorticity and wall shear stress. The position of the maximum axial velocity is influenced more by the curvature than by the torsion. Most importantly, the torsion remarkably changes the Dean vortices produced by the curvature to a predominantly single vortex. Accordingly, it is proposed that the fluid dynamics knowledge gained from the present investigation can be utilized for the design of innovative prosthetic grafts that can control the biological reactivity of coagulant interacting with the prosthetic vascular surface or wall. (C) 2010 IPEM. Published by Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available