Searching for just a few words should be enough to get started. If you need to make more complex queries, use the tips below to guide you.
Article type: Research Article
Authors: Perktold, Karl; *; 1 | Tatzl, Helfried | Rappitsch, Gerhard
Affiliations: Institute of Mathematics, Technical University Graz, Steyrergasse 30/3, A-8010 Graz, Austria
Correspondence: [*] Corresponding author.
Note: [1] Editorial footnote: this paper uses advanced concepts in computational fluid mechanics. For readers who are not familiar with these techniques, it is noted that the author has agreed to prepare a tutorial on this subject. It is planned that this tutorial will be published in Volume 2 of Technology and Health Care.
Abstract: Pulsatile non-Newtonian blood flow in three distal end-to-side anastomoses models of prosthetic grafts has been analysed applying computer simulation. The anastomotic angles of the three-dimensional geometric models vary over 30°, 45° and 60°. The pulsatile inflow conditions in the graft remain unchanged. Numerical results are presented for the axial and the secondary flow velocity and the wall shear stress distribution. Further, the paths of fluid particles and the particle residence times are demonstrated by means of numerical flow visualization. The quantitative study shows complex flow and wall shear stress patterns with flow separation and strong secondary motion in the host vessel and a weakly migrating flow stagnation point on the arterial floor during the entire pulse cycle in the models under consideration. The flow dynamic effects, which seem to be important in the development of intimal hyperplasia, are dependent on the anastomotic angle and increase with increasing angle.
Keywords: Bypass graft anastomosis, Intimal hyperplasia, Fluid dynamics, Computer simulation
DOI: 10.3233/THC-1994-1302
Journal: Technology and Health Care, vol. 1, no. 3, pp. 197-207, 1994
IOS Press, Inc.
6751 Tepper Drive
Clifton, VA 20124
USA
Tel: +1 703 830 6300
Fax: +1 703 830 2300
sales@iospress.com
For editorial issues, like the status of your submitted paper or proposals, write to editorial@iospress.nl
IOS Press
Nieuwe Hemweg 6B
1013 BG Amsterdam
The Netherlands
Tel: +31 20 688 3355
Fax: +31 20 687 0091
info@iospress.nl
For editorial issues, permissions, book requests, submissions and proceedings, contact the Amsterdam office info@iospress.nl
Inspirees International (China Office)
Ciyunsi Beili 207(CapitaLand), Bld 1, 7-901
100025, Beijing
China
Free service line: 400 661 8717
Fax: +86 10 8446 7947
china@iospress.cn
For editorial issues, like the status of your submitted paper or proposals, write to editorial@iospress.nl
如果您在出版方面需要帮助或有任何建, 件至: editorial@iospress.nl